As you might know in art, some people consider the actual art form as simple... But who started those simple forms? Artist who MASTERED all the styles and techniques existing (Picasso, Dali, etc...)and they created this new form to research new techniques. And people just think, Ok, I'll do some ****, and then sell it, without going through the mastery of the art form. It's the same with music, if you go to free jazz without mastering be bop, blues, swing, then you have no point in playing free jazz!