I haven’t really brought my main point across, the focus was on it being an authenticated account. Because if you don’t want to get banned, just connect anonymously and you can join as many chats as you want, without anyone even noticing.
Sure, you can’t actively chat in all of those chats, but you might want to see whats happening, get pings on someone mentioning you in there, etc. It is a thing and it’s something where I’ve seen quite a lot of people I know being added to some botlists.