I agree, but if you are going to advertise a show about restoring cars then it should be about restoring cars. With that being said, I too do not really appreciate mark's attitude and subsequent "comedy" but i was just watching episode 5 in season 13 and mark says and I quote (when commenting on the speed of his friends working), "And watching them work, it should be entertaining, right? I mean it's a TV show...A TV show!" "you see me out there, i'm doing all kinds of stuff. Just like the variety show. I'm spinning plates, i got a dog dancing in a tutu. I'm trying to entertain you, These guys, it's just morbidly boring. It's like watching paint dry. it just takes forever. Do something, kick him in the ***, make fun of him, insult his bald head. do something."
After reading that, my best guess is that mark was being told by the producers to try and spice things up then he watched one of the early episodes and decided that he could make it less "boring" thus annoying worm-man