Just gonna throw this out there - people are talking about "shit art" because it's not something, they personally, like. That's fair enough. You're allowed an opinion.
But those same people have to remember that other people will enjoy the art and will like it. Further more, the people are Marvel like it, and they're better at giving artists good opportunities than angry fanboys are. Mike Mignola got his first professional break in comics Inking Keith Giffen on Defenders. His work was so bad that after his first issue they told him to shape up, or he'd be out of the industry forever. So, Mike did, and here he is now, a professional with two films under his belt, a TV show and various other credits.
The point I am trying to make is A) your opinion is just that, your opinion. It is not law, it does not mean you can call someone else shit because you don't like it. Someone may say the same thing of what you do in your job and I would imagine that'd probably annoy or upset you, but you'll have some machismo fueled comeback like "I don't even care what people think of me at work. I hate it anyway." and B) what an artist starts off with isn't necessarily what he finishes with. Chris Bachalo is a good indication of this, his style has changed so much since his first pinup piece for Sandman.
So, I guess I'm saying if you don't like it, don't buy it. If someone spent their entire life on the internet criticizing what you're doing, it'd probably irritating you to no end and you'd label them a troll. If you're going post to post, saying something is shit because you're in disagreement with it, you're a troll.