That’s what admins are for, meta moderation. I’m not proposing said solution or even suggesting it is desirable. Harassment exist in all human spaces and it is up to those in positions of authority and the collective consensus to stop it. But most internet spaces are dictatorial and authoritarian by default. There are plenty of examples on the fediverse alone. If any admin chooses to promote or protect the harassment then you’re out of luck. If someone wants to annoy the Admins, then they have no moral obligation to protect your community. They are the one’s hosting the service and paying for the servers and bandwidth. No mod has any sort of ownership over anything in here.