Isn’t it up to you to find that out before choosing an instance? It’s not a bad idea, but instance owners are already doing a lot of unpaid work - it doesn’t feel right to start making demands.

Maybe you could build a simple website that allistic instances and allows owners/users to post info on them. Seems a fairly simple project.

Isn’t this your employer’s problem? From your description, it sounds like you’ve collectively isolated Lutz from causing problems for you guys. Has your supervisor asked your opinion?