I like the idea at a social level/product level, but at this point I don't think I'd use any social network that wasn't open at a protocol level in some way. ATProto/etc would be a great tech backbone for this, and would then let users self host their content, it would let orgs run their own views, it would let archivers archive content for posterity, it would open the door to possible federation in ways that suited the network in the future. Re-inventing all of that from scratch would be a terrible idea, and would lose focus.