On Facebook/Instagram/Twitter/LinkedIn, I still have tons of people I'd be interesting in passively keeping up with. Maybe even actively, sometimes. But all that latent sociality is increasingly just dead out of the gate, seeing as I no longer use any of those platforms regularly.
My closest friends, the ones I will actually put in effort to talk to? Group chat. The polar opposite of the public social media ecosystem that we used to have. A closed, private space that admits no outsiders, marketers, or clout chasers, but strongly discourages developing relationships with new people or expanding one's horizons.