Jesus wasn't trying to change anyone's religion, it appears he was only going after those who were "holier than thou" types.
I don't disagree with this. I think he was after people seeing beyond the form to the reason behind the form. In the sense that he takes the teachings and infuses them with an understanding of the spirit behind them, and to emphasize what is important, is to transform that religious expression.
My point of the difference between transformation and reformation, is that a reform is about getting back to the correct practice of the religion, to correct the errors in teachings, to polish up and get back to true form of the religion. I don't believe Jesus was about that. And I don't believe he would say they needed to change their religion either. Just "make clean the inside of the cup first". A reformer would be about making the outside properly clean. A transformer looks within first, and then the outside naturally flows from the inside.
I do not believe Jesus saw the religion itself as what was to be followed. And therefore, would it matter what religion you are, if the religion itself is not the beginning and end of ones 'salvation', or knowing God?
People, and there are still plenty of them, who went through the motions, yet forgot about God. It's a big problem, always has been, that people put rituals ahead of worshiping God
The problem is not always just one of self-righteousness and hypocrisy, which can in fact result from this, but the core problem is deeper than that. It all boils down to one simple action: externalizing God. By seeing God as outside of us, then we will seek God outside of us. The ritual becomes the thing in itself that must be performed. You "must" be baptized a certain way in order to get God to do his part for you. You "must" do this, or that religious proscription in order for God to work right in your life, and to avoid his displeasure of you. What happens is we substitute the forms, the rites, the rituals, the doctrines, the "correct beliefs", as some form of magical things outside of us to bridge that gap between us and God.
Then what happens is that you look to those things for your justification. "I know I'm saved because the Bible tells me so, because I believed and put my faith in Christ", etc. This is not an internal realization, at all. It's doubt. It is looking outside oneself to appease us of our anxiety. It is not expressive of inner Peace. Inner Peace, knows what that relationship is. It knows, without reasoning justifications, without looking outside ourselves at all.
So when that doubt arises, as well it will because no true Peace exists inside, then what follows is an anxiety and all the over-compensating religiosity, the self-righteous hypocrisy flows out of this internal mess.
"Make clean the inside of the cup", is inner transformation, and it does not matter what the religious forms are. Our Peace, does not come through religious justifications. And that I believe is what Jesus taught and wanted people to see. This is not religious reform, but transforming the religion to a living, dynamic form. The law is written on the tablets of the heart. It creates the law dynamically.
Jesus seemed to have no problem with most of the people he taught.
No, because most people want to find Peace. To the religious self-righteous who lacked an open and humble heart he said ironically, "You have your reward".
I believe that in order to follow a theistic religion, one has to put God and people first and the rituals, practices, etc. second.
Personally, I don't see it limited to a theistic view, which is a theological understanding. I believe that which we call God, takes many forms of understanding. And the core of all them is to touch that timeless Spirit, first. And from that Source, love flows to others. Religion is best understood as a vehicle to help support us on that path, not make us into its image. At a point, I believe we can and should say, I am all religions, I am none.