The issue is that these spaces are often prime trolling grounds, and you end up having the same discussions over and over until the honest posters move on and only trolls are left.
I feel you man, I know people that grew up in environments like that, and if you are not temperamentally suited for them they will chew you up.
I found it got a lot better when I moved out on my own and could choose who I spent time and who I did not. But not everyone can do that when they need the most.
If a community isn’t safe for trans people, it’s not safe for anyone. The mob just hasn’t gotten around to abuse you yet.