It amazes me really that some people think that being a cunt has artistic value in and of itself. It doesn't - anyone can be a cunt. It doesn't take any particular skill or talent to achieve that. I could go out onto the street right now, strip down to my birthday suit, run around calling everyone names, get arrested and then claim that it was artistic expression and that I was somehow being repressed. It doesn't make it true.
It's really quite simple - if you do something with the sole aim of raising offence and disgust just to prove that you can, that makes you a troll. And that's not artistically, politically, morally or culturally valuable. Challenging attitudes towards censorship and sensibilities requires much more wit and intelligence than just doing or creating something whose sole aim is to shock and disturb. If you want examples of proper works of art that challenge censorship and sensibilities, look at GTA, 9 Songs or Last Tempattion of Christ.