I didn't realize Sedaris had crossed over into curmudgeon territory. I remember him for screamingly funny social commentary, a brilliant wit.
The curmudgeon's demise is, as usual, exaggerated. H.L. Mencken, W.C. Fields, Jack Benny, Ambrose Bierce, Mark Twain--so many American humorists have found it a suitable platform for lambasting the pretentiousness of whatever was trending in society, popular culture, politics, etc.
And I must take issue with one of the other commenters. Men ARE funny. Sometimes intentionally.