The production-value stuff I totally understand and wholly dig, and that's not why I lack respect for their music.
I'd venture to say that's in the eye of the beholder. A highly skilled, say, progressive rock guitarist could reasonably claim all of them don't know how to handle their instruments.
> lazy, adolescent and derivative.
I wouldn't discount any argument that would claim this is true for all metal. In a way, that's part of its appeal.
> In a way, that's part
> of its appeal.
But I think those three are a bit of a "pick any two" situation.