I'm so shocked that you're going to continue believing what you want to believe. SHOCKED.
No, the criticism means he just isn't funny, and lots of his material is lacking humorous punch lines. His "jokes" seem to be more his antics than his material.
I suppose this is why Carlos Mencia gets a lot of flak for stealing jokes too, while other successful comedians (Seinfeld, Rock, Murphy, Cosby, Carlin, Dangerfield, Regan, Pryor, Martin, Hedberg, Chappelle, Williams, Foxworthy, etc) don't?