I definitely agree that it's not something to be too worried about. Anything on the fediverse or adjacent to it is already going to be making local copies of remote profiles, but it's all public info (no fear of private info being geabbed, like with an email provider), and if meta can't serve us ads or control the servers that we're on then there's really not much to lose.

Especially being a Nostr user who's being bridged to the fediverse myself, I think interoperability has a lot to bring and it'll hopefully be pretty beneficial to everybody.