It’s not.
Simply because art is subjective.
This. We all have different aesthetic preferences, whether that's from exposure or if certain senses of ours are more attuned to appreciate some aesthetics above others.
It's a question of preference, to be sure. Pop music is no way "superior to other art forms." I love film and I love music, but either leave me with different impressions based off the medium alone. A visceral project on film may be superior to one recorded as a pop song, but that goes vice-versa.