I think an inherent problem is he is in a cult. There's just no getting around it. He will always have social pressure that we don't see on camera IRL, as well as an internal critic telling him to tone it down.

Back in the day, he was harsher on Orthodox Judaism but I think particularly after Tree of Life, he toned it down a lot. Probably he experienced some self-doubt that he was encouraging bad things and probably he received some serious pressure from his religion to back off.