The audience has changed more than he has and doesn't like to acknowledge it in the same way you sometimes hear middle aged men complaining about the Star Wars prequels being childish while having a blind spot for the teddy bears in the 3rd one.
I remember a while back going along to my daughters dance and theater class end of year show and suddenly realizing half the show was 11 year old girls basically doing Dave's CVH schtick, doing high kicks, leaping from things and doing the splits, twirling batons and forgetting their lines.