Treading carefully is probably our best bet, but it's very difficult and error prone.

There are no militant atheists, in any reasonable sense of the word. If mentioning facts about the world is seen as criticism of religious people, that's a big problem. We know vaccines work, because our best research shows that. It's not controversial and we should be free to mention it. Huge parts of many religious text are factually incorrect, we know that from enormous amounts of research -- this is also not controversial and we should be free to talk about it.

> Isn't that just a really wide-spanning opinion though? Maybe we're using the word differently and mean the same?

In that case everything is opinion and we have no real knowledge of anything.

Thanks!