This is an absolutely true story okay:
One of my friends DM'd me in TEARS a couple months ago, because she'd been blocked by a single user instance.
Like, some guy came into her mentions, and they got into an argument about whatever she was posting about and he made a big announcement of blocking her cause she's a bad person.
So now she's DMing me to say she's been banned and has no idea what to do - it was a single user instance that blocked her.
The disconnect is real.