@cd_home @mariapopova @rachelmetz @Chanders Well, yes, the people with accounts on the server in question would have signed up for it—but not all the people on other servers which federate with that server—except perhaps implicitly?

(And you're assuming the server is being open about it by putting it in the description, though I admit I'm not sure what their point in going to all the effort of using AI, but keeping it a secret, would be: perhaps research of some sort?)