I would have to agree that if Kate got really far to begin with, let alone in the finals, this should would get a serious blow struck to it. I think they cast certain characters like her to do the job of getting publicity riled up for the show, without the intention of her lasting very long. But they sometimes forget the power of the public. I would say Marie was as close to a train wreck as possible of being in the finals but she wasn't horrid like Kate. Ty Murray and Marissa Winokour definitely outlasted better dancers to get to the semi finals. There's sometimes one couple who you can't believe who's voting for them late in the competition, but I don't think they're as bad as Kate. And on the terms of pro fanbases, Tony is fairly popular and some people may pity him in terms of being stuck with Kate and for that reason alone 'punish' the show by voting for them and keeping them around.
I'll have more faith in DI if the results hold up, though I didn't need that site to tell me Aiden wasn't doing so hot. Vote #1 just had to go down this season of all seasons. But I have a hard time believing Buzz and Kate were the top two vote getters.