@HelloRaptor
A friend played a sleepwalker, she was OOC'ly talking with a Vampire in a room on grid, they both logged off an hour later. Jeurg saw them in a room with +who/where then invited the sleepwalked over for RP and melted her mind to the point of unplayability because he had seen the player in a room with a vampire. This eventually was retconned and was the tipping point that had Jeurg thrown from the mush, but that should at least give you an idea as to how he was.
Leka was another ball of something not entirely pleasant. I actually have nothing bad to say about her with my own dealings with her. If anything there was some great RP and some great, dark hooks that made for a really cool encounter. Then again, I was playing my Vampire smart and he turned down a lot of 'Changeling gifts' because he could see the barbs in the contracts. Others did not and they paid the price.
There were other people on that mush that were worse in some regards, so I don't know what else to say. <Edit: Removed the Ernst portion after further debate. ;)>
That being said, there were numerous Changelings and Mages on the same mush that were equally idiots, don't assume that vampire is the only sphere that idiots flock to. They're everywhere, anywhere, you're surrounded by idiots, and if you're not, chances are you're the idiot... (paranoia.) Many changelings were killed, mages as well, and a couple werewolves because they were played by idiot players who did really stupid things... One changeling walked into a bar where one vampire was sitting, surrounded by mortals, having a good social bar scene (HM=BarRP) and started shouting out stuff about vampires and wanting to meet a vampire and wanting to know what sort of Clans there were and factions and the like. Naming specific people, etc etc. Loudly so that you know my vampire would overhear, and rush to her to tell her all his vampire secrets... Yeah no. She died two days later, and Changelings didn't bat an eye.
Idiots everywhere.