Earlier quoted context omitted.
The conflation of skill with taste demonstrates exactly why Graham is wrong. There's many widely recognized works of art, by critics of similarly recognized taste, that are far less skillful than what a competent art student can put out today and yet held in higher acclaim. Post-modernism, Dada, and surrealism drove the stake through this point, The Treachery of Images or Fountain (Duchamp) aren't extremely skillful,…
I think you’re taking too narrow a definition of skill. True, drawing a straight line is a skill, but the vision to draw a particular line in an innovative way is also a skill.
That Graham wrote an entire essay rubbing up against this point without once encountering any literature that explains this (seminally Bourdieu, but there are many others) is surprising.