1Password but considering trying Bitwarden and host it myself. I do trust 1Password and have no reason to leave them other than the paranoia still lingering from when I had all my stuff at LastPass

How would that work? How will new instances/servers ever get a chance to grow if the fediverse only allowed those who are already whitelisted? Sorry for my limited knowledge about fediverse but it sounds like that goes directly against the base principle of a federated space?