Indeed, especially in the long run when the others find out the hard way that you were right. The most interesting thing I read in the Antipatterns book was the author's claim that only 1/5 of programmers "get" abstraction and therefore "democratic" project management processes tend to result in very poor architectures.
If you're in a design meeting throwing out a bunch of great ideas while helping others understand why their ideas won't work, and you can't spot the Asshole, then chances are...