Your point being what? That there should only be one way to interpret a work of Art?
No.
Hamlet was written by Shakespeare. Some productions are well done, others not so much. Like I said in a previous post, beauty is in the eye of the beholder but that doesn't mean the beholder isn't totally insane (like the "artist" that created the piece of garbage that is the subject of this thread).
Judgments are made by society all of the time. Some are not good and are changed over time (Slavery, discrimination, etc...) and some stay consistant throughout time (illegality of murder, rape, contributing to the delinquency of minors, etc...). I believe (And I believe history backs me up) that no matter how hard groups and persons try to push the envelope there will always be a standard that will be consistent throughout time due to the imprinting of the natural law on humanity by God.
Moral relativism: to what is it relative? This is why it is no good.