He is, and I agree. But I do like his books. The Ender Wiggin saga is excellent reading. YMMV.
Heinlein was a bit of a knob as well. You know, Biggus Dickus. But, I grok his writing.
David Brin is still my favorite S.F. author, and good guy in real life.
Note to admin/mods... you can move this to the Entertainment area, I screwed up.