I'm in one remaining OSR group, that has a Pride flag as part of its logo. I figure that keeps away the worst of them. But so many others, I tried to stick it out so as to not cede the space, but that just wore me down and I ended up leaving eventually anyway.
I'm in a secret OSR Facebook group with zero toxicity. Tres cool.
Edit: But the D&D UK Facebook group is very low toxicity too. Most of the posters are laid back; you get a few snide comments but the mods don't take sides or let things get out of hand.