Baby-sitting bad behaviors

I would think that is exactly the job of a maintainer: it's just a matter of what domains of behavior you need to baby sit - their code? Their behavior on a mailing list unrelated to code? Their behavior outside of the kernel community altogether?

The line must be drawn somewhere, but, at some point, you are indeed baby sitting adults. Hopefully only in a very limited domain, though.

I suppose you could be a maintainer that doesn't take responsibility "baby sit" for the patches submitted by other people, but you will either have terrible code or no contributors outside of yourself.