I like the idea of you https://joinkith.com/ but I don't see how it can possibly work. These are the issues:
There are people who are sick of social media and will never be convinced to join up again. They've already left the building and aren't looking for anything else. I'm not quite there, but almost.
Other people are using established social media simply because that's where their people and orgs publish. I am eternally frustrated when my local cafe uses Insta or FB for their "web presence", but I'm not going to be the one to convince them to use something else. I hate that my local rock climbing partner finder group is located on FB, but what can I do about it? I also think it sucks that there are thousands of people in that group - I soon realized that this group simply doesn't work for me, since rock climbing requires high trust and I can't trust thousands of people.
Many people resist the idea of signing up for yet another social media account, esp when none of their people/orgs are already there. For example, I've sometimes thought of starting a Heylo group for local rock climbers to find partners - this might actually help me find more climbing partners. But I've never tried it. I just don't think people will join. The barrier to entry is (1) install app (2) create login (3) use app. SFAICT no one wants to do this if they're already on FB and already are a member of the group there. Even people that I know manage finding partners with email lists (gag). Can you imagine how much higher the barrier to entry would be if adding (4) you have to pay a monthly fee?
I do like the idea of "only allowed to invite someone that you know in meatspace" but how is this enforced? I also recognize that requiring payment could help increase the trust level, and I recognize that members have to pay in some way (ads, fees, sponsors, privacy violations) in order to support the platform.