Something comes close though. Dismissing critics as amateurs without further discussion, and also saying anyone who doesn't intuitively agree has no aesthetic sensibility (as is said in a child comment below). These substance free dismissals are equivalent to your criticism of the creator's comments.
Though, obviously, I do view them as wrong, I gave my reasoning as to why. I could go into more detail as to the exact reasons why Comic Sans is ugly, but others have done a better job than I would elsewhere.