Seriously. Every form of entertainment has baked-in political assumptions, and that definitely includes #ttrpg . You might choose not to examine them, but this is an active choice on your part, and you don't get to pretend that your entertainment is "free of politics".
This comment answers it better than I can - https://beehaw.org/post/24101893/5457340
The hostility comes from the fact that for many, their existence is "political". When people say "I don't want politics in my game" it often means that they don't want to consider the existence of those people.