@jerry It's absolutely a problem, and it really does need dealing with. I think as a start, it would be nice if the instance lists gave an idea on what the defed policies of the instances looked like. Do they defer entirely to users? Block the worst offenders?
I think getting the introductions better would be good too - be clear that it's an issue and how to deal with it (pick a better instance). But right now the official page doesn't really talk about this, and that's where the eyes are.