If you want to keep looking at all the religious beliefs in the world that is your choice, but I see no point looking at beliefs that makes no sense to me at all. If you do not like believe in progressive revelation I cannot see how you could ever be a Baha’i, since that is the underpinning theology of the Baha’i Faith.
Just by taking undergrad courses on comparative religion and courses about some of the different religions, it was easy to see how different they all are. If by chance they are all one I think the Buddhist analogy about the blind men describing an elephant is a lot better. They each described what they felt, but they couldn't see the big picture and see that the elephant was more than just the leg or the tail.
Progressive revelation, for me, does not deal with tribal religious beliefs. The whole held those beliefs and it kept that tribe together for hundreds of years. Some had shamans and vision quests and spirit animals guiding them. They had creation myths. Myths about their God. And prophecies about what was going to happen in the future. We still have tribal beliefs today, like the Hopi's in Arizona. And there is another tribe still following their ancient beliefs, the tribes of Judah. Baha'is do take their myths and add them into the Baha'i religion.
But do they do the same with the myths of the Greeks and Romans? Or other "pagan" people? The myths of the Far East... like Shintoism? Even the myths of the people of India? Baha'is barely touch on them. So, for me, progressive revelation is an inadequate explanation about how religions have evolved or progressed.
Looking at other religions does not cause confusion and doubt for me, not at all, but why would I need to check out all the other religions to know that a new religion is true? Do I need to check out all the used cars in the car lot before I buy a new car?
Well, for one thing, if you're going to buy a new car, which make would you chose? Then what model of car... or maybe a truck would better suit your needs? If so, a big truck, a small truck, a six or eight cylinder? A gas or diesel? Or maybe a Tesla electric truck? Then do you want some extras that aren't included? What color? Then you test drive it. Then you put a down payment on it and maybe a trade in and are now stuck with monthly payments. A month later the stupid thing breaks down, but it's still under warranty. The warranty runs out and then it breaks down again. You find out a small plastic part or a gasket is the problem but it's gong to cost a ton of money, because they have take have of the engine apart to get to it. Then you have an electrical problem. Then you get a flat tire. Then a rock hits the windshield. Then you spin out on a rainy day and hit a tree... And you think, maybe I'll buy a used car, since the initial cost would be as much, and some of those old cars were better built, not so many plastic parts. Then which year? Which make and model? Which color?...
But, we are talking religion. Sure, there is confusion, contradictions, and other problems in every religion. In days gone by, things were easier. You were taken to a church, or temple or some meeting place by your parents and that is what you believed. Then people started living closer and closer and having to deal with people with different beliefs. Some started questioning the beliefs of their parents and tried something else. Maybe it worked... kind of, but wasn't perfect. But how many people ever found the "perfect" religion? A religion that had all the right answers and all the right practices and beliefs? Most have things that might not be all that believable. Or, maybe some explanations aren't quite satisfactory. But, the religion works good enough, besides, religion is only part of life. You got your work all week and then for many... religion is only a Sunday morning thing.
Then other religions started gaining popularity. They promised a better more fulfilling life. Or, they revamped the old religion that made it more real and something that you could apply to your life every day. People learned how to meditate, do yoga, eat healthier, even become vegetarians. But these things were coming from Eastern religions. Then the Western religions got a big push with the "Jesus movement". Christians actually trying to live up to the teachings of Jesus every day. Then some Middle Eastern religion started making some noise. Saying that Jesus had already come back.
Most of us know a little by some basic beliefs of the other religions. Many have found a religious belief and practice that works for them and aren't looking to change. Some of those beliefs don't push their followers to go "spread" the word and "teach" others about their religion. Christians do. They have to go and tell people that Jesus is coming soon. And Baha'is do too. They need to spread the word that the "Christ" has returned. Today is a new day. Then people ask, "prove it". "Show me how that is true?" Then they ask, "But this religion says this and the Baha'is say that? Why? To be an effective Baha'i teacher, and because the Baha'i Faith says that all the major religions are one, then that is why I think they should learn a little bit about several religions. I think not to do so makes a Baha'i too much like those that only know their religion and don't want to know about any other religion.
I do not believe Baha'is are ever going to get involved in politics, so they will never be running things. We cannot go against what is in the Writings, and that includes the Writings of the Guardian.
I'm talking about "governing." Let's not say your whole city is Baha'i, but let's say 10,000 people out of a city of 100,000. How is the LSA going to govern all those people? Knowing that many people are falling into the cracks already even in small communities, how is the Baha'i Faith going to meet the needs of such a large amount of people? Will they start schools? Will there be several Baha'is that get together and start businesses that incorporate Baha'i ideals? That pay fair wages or maybe have profit sharing? Provide health care and child care? Won't the LSA members just be ordinary Baha'is? Or will people with knowledge and abilities to govern people and get things done be elected? Will the LSA have to judge cases about grievances between Baha'is? So will the LSA have members that have knowledge of the laws and how to judge? Will they be more like CEO's and delegate to others and form committees and departments that specialize in the different things necessary to run a large community of people? In other words, will it get to the point where they start doing all the things that a secular government is doing? But, it will be for the Baha's and the secular government will be for everybody.
Then, let's say, the Baha'i Faith grows even more in that city. Let's say 60,000 people. They are now the majority. And let's say that the Baha'is are doing a better more fair, more just and with little or no corruption. Why keep the secular government? Why keep partisan politics? Why wouldn't the people let the Baha'i methods run the whole city? Next question... could they? Or, will they become just as bad a bureaucracy as we already have? Will the leaders of the city really only be nine Baha'is elected by all the other Baha'is? How are those nine going to run everything? Since they probably aren't? How are Baha'is going to run whole cities? Or, even the 10,000 people in a large city?