I don't think you have to like D&D to respect the contribution it made in the realm of gaming, both tabletop and electronic. I don't like jazz or the blues, but I respect that rock took its roots from these forms, and I like rock. The second wave of Gygax articles have been pretty critical of the game and the man. It starts getting into a Microsoft/Linux kind of debate. There are always those critical of what's popular, who will only eat vanilla because everyone else likes chocolate, or indie this or that. It's just immature, contrarianism.
For a really well done Gary Gygax biography, check out this article by Wired.