So not a lawyer here, but I have signed many an NDA for the clients that we work for. The way I understand it is that the legitimate reason for an NDA is to protect intellectual property and also company secrets that have not become public yet. To that extent the punishment for violating them is related to the financial loss the violation has caused.
Using NDAs the way the Rawat organisation and probably other similar organisations do is therefore an abuse of their intent. Certainly they can not be used to prohibit testifying about criminal offences. Things that are not criminal, but mostly just embarrassing – that is interesting. The Rawat organisation could claim that it reduces the value of their brand or try to claim some other way that they have lost revenue. This would be a very interesting legal case I would think, considering it is all supposed to be about helping people and not about making money.
Again, just to emphasise, I am not anything close to being a legal authority though.
Then there is the issue of defamation, but I don't see how this relates to NDAs.
Finally, I want to add that NDAs seem to mostly have a psychological scare tactic on people. Here is just one of many examples I have seen. I have a good friend who was working at a big tech company. For years he would never tell me what he did because of his NDA. So one day I asked him, "what is the penalty if you violate it?" He had no idea. But I think he was mostly concerned with losing his job.
Now once you leave the company, that is obviously no longer an issue. If at his new job he happened to speak about something that he wasn't supposed to, well the old company would have to bring him to court and prove that he said something and that it had caused financial damage to them. I suspect this situation happens often and is one reason why the tech companies try to steal staff from their competitors.
In conclusion, seek legal advise but probably the cult can't do much legally against you speaking out.
re: your above posts (no text)