The lemmings are a squeaky bunch.
Humans work better on the tribe model. Having diverse communities and even fractured topics covered by multiple communities on different instances promotes this model.
It feels like a properly social media that isn’t trying to exploit me, and I think that’s something special.
I don’t disagree with you on the scale/tribe point, but I do question if the larger factor at play isn’t the invisible hand of advertisers and corporate interests guiding and manipulating the landscape for their benefit rather than ours (which you touch on, I just think it’s a point worth really hammering)
Hint: it very much is - all the way up and down the scale, from why Reddit’s search function sucks ass and subs are only allowed to have 2 pinned posts that cannot be edited by a mod team - why promote listening when talking is what makes more ad revenue? - to making it harder to read a sub’s ruleset prior to posting, anything that would be a barrier to showing another advertisement to a lager group of people gets smoothed over, while things that promote human interaction and peace of mind get forgotten along the way :-(.