It sounds like she's saying she met up with more Meta employees than she actually fucked. So what happened with the others, did they get cold feet and back out of the deal? Maybe. Or maybe they they didn't realize there was a deal at all, and thought the meeting was simply a date that didn't pan out.
How do we know that the conversation was "i will have sex with you if you unban my account" (which is pretty clear quid pro quo), and not her establishing a relationship then asking for a favor from a "friend"? It seems like a pretty dark rabbit hole if Meta of all places has to figure out if this person has a relationship with a person for pragmatic reasons or not. How many relationships do you have in your life that exist to facilitate X/Y/Z.
People trying to befriend people who are perceived to have some kind of power (be it economic, social, political, or in this case i guess technological?) is a very old tale.
Friendship won't be treated like a bribe but sex definitely could be, especially if one party says it is.