Sometimes shit sucks.
Or, to be more verbose, sometimes somebody creates, publishes, and endorses a crafted good or work which is incredibly inferior not just to current state of the art, but also prior art and future ideals, but without any indication that the creator has encountered any reason to believe that their invention will not stand the tests of time, merchantability, reliability, insight into the human condition, etc.
In those cases, it's incredibly useful to identify and call out these things as bad. If we can't use the full width and breadth of language, then it gets harder to do so; invariably, all attempts at censorship start with the negative parts of language in an attempt to whitewash thought and opinion. (As recent examples, consider Facebook's omission of a "Dislike" button, or American Idol's refusal to allow voters to indicate unfavorable opinions of all contestants. The historical ideal is Newspeak.) When we can't say that something is bad, then we lose some of our freedom, not to mention some of the expressiveness required to attack everyday problems.
So, yeah, fuck that. Sometimes shit sucks.