On the video itself, maybe that isn't even their preference in animation, it was their bachelors assignment, maybe to make a parody of old action cartoons wasthe assignment.
Condemning an entire decade of animation to nothing but shit is incredibly pretentious. I don't think when people think about how great the 80s and 90s were they aren't picturing the snorks and fucking extreme dinosaurs or god forbid, sonic. The good stuff, like dexter, powerpuff girls, batman, you know stuff that had effort and work behind it and not just mindless action or toy whoring.
And are you honestly saying the current animation era is any better than what we had as kids? Of what little we actually have of it. Flipping through cartoon network, nickalodean, a good chunk is 3d, another is embarrassingly flash work(I'm looking at you Johnny test) that makes the front page look like a shining beacon of hope, and then there's the fucking reality shows.