I don't think that's it. I think people are looking at it like, staking him with the magic stake thing, that fixes all the people he's turned. And that's something they know will work. And it would save more people than just staking all of them. The best choice they can see in a bad situation, you know?
But if we can find a way through magic to fix him too, I say let's go for it. The more people coming out of this alive, the better.