There was definitely a problem at first on mastodon with people buying a server instance for the black community, and then not actually blocking all the standard bad servers.

Basically giving them a server full of targets to harass.

I guess you could say setting up an instance and maintaining a blue sky block list is sort of similar, you’re taking it on yourself to see all the horrible stuff, even seeking it out, to protect others.

The blue sky approach lets people use multiple Blocklists though and masto just has the one of the server you’re on and your personal one. Lots of room for improvement.