This is America in a nutshell: People without skills. Without knowledge, without foresight demanding to be served exactly the way they want to be served
Yes and no. The advice you received in particular is just as valid for neurotypical people. Knowing what is okay to talk about in different contexts is a learned behavior, not something that comes naturally to everyone.
However it is also true that a lot of advice is just 'mask harder' because... It's really the only thing you can do. You can't control other people and institutional change is slow, so the only option is to affect what you can affect and that will be yourself.
The difference is on WHY you're doing things. Masking is toxic if you're doing it to please other people or because it feels unsafe otherwise.
But adopting different ways of communicating depending on the context is not masking, it's how language works. Nobody speaks to their boyfriend the same way they speak to their Christian grandmother or the same way they talk in Xbox Live .
No. There are plenty of religious people in their 30s