rotoscope is a shoddy technique, but simply a technique nontheless
No, it isn't. Rotoscoping can be used in many interesting ways, and it always looks interesting. Max and Dave Fleischer, the guys who actually invented the Rotoscope, made some of the most respected works in animation history. Rotoscoping was the only way to perfectly mimic the dancing of Cab Calloway in the
Minnie the Moocher cartoon. And only recently, films like
Waking Life and
A Scanner Darkly, which use a variation on the technique, have won acclaim from critics and viewers alike, and were somewhat successful at the box office.
In his interviews he always comes off like a pompous asshole
What interview? The one where he punched a nun?

(Note: I am being sarcastic. He didn't
actually punch a nun.)
the one thing I've seen of his (Wizards) I turned off halfway through.
You're commenting on ONE movie? Try watching
Heavy Traffic,
Coonskin (
Streetfight) or
Fritz the Cat. None of these have rotoscoping.
And
American Pop has rotoscoping that's more "normal," as opposed to the experimental rotoscoping in
Wizards/
Lord of the Rings, and probably a little more to your liking.