If the descentralization of social networks continue, we will have to prepare for the eventual rise of the instances wars, where people will start to fight about which instance is better and which one is weird to be in and so on, but that’s for the future of us all.
There already are safe-spaces for certain communities. Lemmy.blahaj.zone (i think it’s spelled that way) for Trans/LGBT communities, beehaw for a generally friendly environment and the dbzer0 instance for pirates.
There even is exploding-heads for Nazis.