I generally wouldn't trust any social media app that's not used the leadership. Threads is still half baked but at least Mark uses it regularly. And Elon is regularly posting on Twitter.
Some part of that is due to the design of BlueSky. But I think most of it was ironically due to the invite system simply existing. Jack wanted an open platform.
Dorsey hasn't been doing them any favours for a long time, he's all but publicly disavowed it, deleting his account to focus on nostr. He's still on the board of directors last I heard, but if his public statements are anything to go by, he's not actively involved.
Not sure if the same applies to BlueSky, X, TruthSocial etc.
Social networks typically demand large user bases because it goes hand in hand with advertising.
They were actually super early but the invite system squandered that opportunity. For months it was just a tiny subset of oldschool twitter users.
If I was at IG I’d have made the number carry over even if the users were not there yet, seemed catastrophic to sign up day one and see like 10 followers when you have thousands on IG