In his list under "Mistake #5".
"...conservatives prefer art that shows the world as it should be, not as it is."
This is how liberals view the world. Is he saying conservs. see the world "as it is", but prefer their art "as the world should be"? This statement is too general to be taken seriously.
As a conservative I live in reality and see the world "as it is". Just because I don't enjoy looking at the human debasement that goes on in the world doesn't mean I would rather see the world "as it should be."