Ruin no. But negatively affect, most definitely yes. See the recent censorship of cover art for evidence of this.
Censored art is art you're not allowed to see.
That art wasn't censored. You can see that art anytime you want.
Anyone who thinks we live in some kind of censored society is showing just how culturally out touch with the real world they truly are.
Just because the original material is still available for consumption elsewhere doesn't mean it wasn't censored in that instance.
And when a potential,not even necessarily the intended, audience can effectively demonstrate that their approval is necessary in order for an artist to publish a piece of art, its hard to argue that we are not living in some degree of a censored society.
Artists are free to publish any work that they have the IP rights to publish. That right doesn't protect them from criticism.
An artist being silenced because a potential audience finds his work to be distasteful isn't criticism, its censorship.
Please explain how artists are being silenced. To have a company publish your work for hire is not a right. Any artist can easily and freely post their art to their website (within the confines of any agreement they have with the holder of the IP rights, natch).