Thing is, the average age of Yogs viewers is pretty low anyway, and their videos have swearing in them. It's pretty normal around the place.
Yogscast have certainly helped spread minecraft, their videos are on the front page of YouTube all the time.
The fact that Notch thinks that they should not be paid to go to minecon (when asked by Mojang) is a bit silly, it's halfway across the world, you can't expect them to do that for free when they have to take time away from their normal work as well...
Will be interesting, I think I know who'll win though.
Oh also, on the point of the minecraft community being about respecting and caring, go spend 5 minutes on the official minecraft forums and tell me that :S