I encourage you to go read the comment again and consider that maybe you've misunderstood the intent, possibly due to confirmation bias (maybe you expected to encounter comments about furry art not being art, and you saw a comment containing the word "furry" in a negative context and mentally replaced it with a generic cut-out of an anti-furry sentiment). Makes me wonder if you're a chatbot, actually.
Great. Give yourself a pat on the back for that one.
Now that you've had your smug moment, note that the parent comment wasn't concerned with the quality of content, but the category.
"Furry smut isn't art", brought to you by "Rap isn't music" people.