We want as many people on side as possible. Funny comedians would great, but we'll take bad comedians too. Comedians' job is to call out those that need calling out, and that's certainly needed here.
I do find this Maher chap cringeworthily unfunny, in a particularly American way, but at least it's only his style I hate - his actual observation is on point.
At least it's not someone like Stephen Colbert, who now appears to be spectacularly unfunny simply because of the ideological blinders he's wearing, despite the fact we know he could do better, and used to. You can't direct your comedic punches properly if you can't face the truth head-on.
(PS, does anyone else have the sense the previous poster has no personal knowledge of who Bernard Manning was, or the content of his routines, or the nature of his audiences, but needed some name of a "bad comedian" to fill in the blank for a rhetorical point?)