Interesting concept but what seems more compelling to me would be more like a Tiktok/Reddit hybrid. You log in and see content that "the algorithm" knows you'll like, but with an added element of community from people "the algorithm" knows you'll find cool/funny/insightful/etc. Like a simulacrum of the Facebook feed but instead of friends and family it's this "tribe". No need for labels or even naming those people.
Feels like this is what social media is trying to achieve anyway but they're mostly stuck with the existing social graph as a starting point...