It only means there's boards out there run by crooks for crooks.
They've kind of chosen their own shitholes to sit in.
I don't really see anything too wrong about it.
Obviously, let's say there's a forum "Latin", created by the "Romans". The expectation of someone looking at the forum's title "Latin" would be that it's a nice and cosy place where "Romans" discuss in a civilized manner. If a new user speaks "Latin", he might turn to that forum. Seeing it full of shit-posts, he might then either leave that forum for good and maybe propose a new "Latin2" forum, or he will start cleaning out like Hercules in Augeas' Stables (oh no, that would make him a "Greek", not a "Roman" ).
Either way, he won't end up "stuck" in a shithole.
In other words: the burden of keeping a local board clean is always on the local community, no matter what.