I feel like nowadays we're talking about morality of art mostly when we're talking about mainstream media (representation in popular media etc).
I'm no art critic but I've always thought that generally accepted truth about art is that there is no single concept, idea or purpose behind it. It used to be something along the line of "art is beautiful" but it's not even that now. Anything can be art and art can be anything and it can be perceived in numerous ways.
I haven't finished it yet tbh but I find this piece of writing weird because I really don't see where it's coming from.