He has a point about simplifications when it comes to media and art being approachable by the masses (and I say this with no insult intended, simplification of anything will always have broader appeal). See popular music vs avante-guard jazz (i.e. Miles Davis, probably the most-approachable of the type!)
But holy cow what a condescending, arrogant, insulting pick.
Fuck him and anything he ever touches.
Thing is: They are working from the basis of media that has been successful already. So the amount of “dumbing down” neccessary to achieve a somewhat broad appeal has already been done by the author of the original, so to speak. Their argument doesn’t hold any water whatsoever on no level imaginable.