I may not be seeing it, but it talks about unification, but more in the continent of replacing them with a chat interface? Their git repository nor their site isn’t making me wiser.
I think I stopped caring a long time ago. I’ve always been different from the rest and went from trying to fit in, to embracing my difference to not caring anymore. As long as you stay informed about the world around you, there is no issue imho with using other or different apps to what your peers are using for entertainment.
As for the shift in perception, only when it’s forced or required.
Also social networking is a minor additive, not that important. Add to this, if none of your friends are on it, why do it in the first place?