I have been on both sides on this. I was trapped in a Buddhist group. Considering that the teachings where flawed or wrong would basically mean that I would lose out on that community. Believe me, the sense of belonging can be euphoric in a religion.
Of course, changing your view in isolation is quite easy. It becomes harder when a big part of your life requires you to believe.
Also, when I was younger my need to “be right “ was quite strong. I had severe self confidence issues, so “being right” was the one thing I latched on to. Admitting being wrong gets really hard once your self confidence is that shaky.
I am doing much better now.
I mean, I would technically still be welcome there. But no longer believing does mean I can’t really feel connected with that group. And thus losing community. Maybe “trapped” was a strong word to use here, but trying to discuss the flaws was just met with equally flawed arguments. Just look up the “five mindfulness trainings” from plum village and it should be easy to see how they can become problematic when followed to the letter.