They could already get all of your profile and post info… I could get that right now through the free api for every account on this and every other thread with a couple dozen lines of code.

Edit: I’m also unclear on how they would ever get your IP- if you never use their frontends the only IP they’d have access to is that of the server your account is hosted on… Which would only be your own IP for the extreme minority who host their own instance from their personal internet connection, and Meta wouldn’t be able to tell that that’s the case anyway.