Personally, I find this stuff fascinating.
It does belong, I think, in "philosophy" because it directly makes us confront and judge exactly what our craft produces and who better than us, should make determinations what is "good" or not.
On almost every picture some people will be moved by, some will love it, some will find it a technical masterpiece, some will find it derivative and others will find it boring or hate it.
That says a lot about us. And our craft.