If God meant for His revelation to mean different things to different people, then what you say is relevant. However there is an alternative:
God said what He meant and meant what He said, that there is one thing God said to all people.
It is not God's fault that people, for an infinite variety of reasons, misconstrue the message. At best, of the many thousands of different religions, one, and only one, agrees with the scriptures.
You like to offer "alternatives," it seems. Still, it is possible to make important things understood by pretty much everybody. We do this all the time, when people are taught how to multiply 2 numbers together, or to add a new contact on their cell phone, or how to hook up their TV, or how to file their taxes. Yes, a few people screw up all of those things, but you can't tell me you look around and see a world where nobody can agree on any of these things. And believe me, if that were the case, all of the Technical Writers responsible for that documentation would have been summarily and justifiably fired.
And while it might be possible to convince me of your point that "one, and only one" religion agrees with the scriptures, I'm willing to bet you could not begin to make the case for which one it is. Or could even tell me how you would go about making the attempt.
I can read your thoughts now, and no, I'm claiming to be that one. You can relax.
In fact, given the uniqueness of every individual who has ever lived, there is at best one of them who is the bastion of Biblical truth. But I'd place my bet on the fact that such a person does not exist at all.
And there I would agree whole-heartedly.
Having said all of that, I can say with complete confidence that 99% of the scriptures are plain enough (NIV is 8th grade reading level) for anybody to get enough out them to make a positive difference in their life. It's just a matter of reading them without the preconceived idea it is a fairy tale. If that's what people look for, it'll be easy enough to see. However, it is equally true, if not more so, that if someone approaches their study with an open mind, they will find a very real guide in life that never fails.
The problem that you cannot see -- I have no idea why, but I know it's true -- is that the scriptures, no matter what grade-level you might write them at, can't do what you say if taken in their totality. That's because that's not even what they're about. The patently fictional history of the Jews, has nothing to do with helping people understand how to cope with life's challenges! And in fact, that fiction is a huge part of what makes the Bible -- taken as a whole -- such a piece of contradictory nonsense. You cannot, no matter how hard you try, get a God that can be described as "Love" by reading any of it! There's more hate, more murder, more regret, more unfairness, more reneging on promises and what-not than you can shake a stick at.
So you could toss out the whole OT (leave that to the Jews, I suppose, except that then what are you going to use to "prove" the supposed prophecies that make Jesus the Messiah?), and just start with the NT. But even there, it is so obvious that the many writers (not who they claim to be, except for 7 and possibly 8 Paul letters), with radically different viewpoints, sow little but confusion. Faith or works? Works or faith? Both? Neither? I can find all of those.
And it would have been very wise for the early church just to have quietly buried Revelation. But they didn't, and so there it is.