1. 'Noob moves' seems to have made it's title here in Toribash; I won't claim the exact meaning, but mine would be something like "winning by ways most commonly known to the community"... in other words, the metagame.
2. I think it's a joke that someone depends on shoveling to win, anyone can pick up the game and know shoveling within minutes. I find it cheap, but I'm not saying it's unfair. You are right though, that was an opinion.
3. Who are you referring to when you say "they?" If you are talking about the shovelers, then you are correct. They know nothing about the game- the way joints work together and move, or the manipulation of specific joints to achieve your goal- therefore they are at a severe disadvantage when playing other people that are familiar with said criteria.
The first to points I can agree with.
When I say "they" I mean both the shovelers and other people too, because contrary to what you said, most people here don't know much about about the physics of this game. If they know how the joints work is a different story.