I applaud you making your own decisions, setting your own boundaries.
Unfortunately some folks who get caught up in whatever type of belief system then get pushy and rather insulting to those who are not yet convinced. They can get manipulative, can love bomb folks then corral them into things they really might not want to do.
We always get to say No for any reason at anytime, we get to cancel just cause, we get our money back. The group members might have their whatever beliefs about that, but ultimately them bad mouthing us is just nonsense. We get to choose what we do.
Can you tell I speak from experience?

So glad you are gonna limit your time spent with those who try to apply pressure.
Sarah