There are already several white male comedians in the US and the UK doing news-like shows: e.g. John Oliver, Seth Meyers, Stephen Colbert, Dara Ó Briain, Adam Hills, Bill Maher. It’s not bigoted to want another point of view–let alone to agree with someone who talked about audience preferences.
And (as someone else stated) the job is not about who is funny. Not only must they be intelligent and politically minded, but the show clearly has the host bring their point of view. That’s obvious by how the show was different between Noah and Stewart.
I’d argue that it’s too simplistic to cry bigotry just because someone states a preference or acknowledges a trend. It was the old idea of bigotry that people needed to be completely colorblind. Sure, sometimes those reasons may be bigoted, but not always.
That said, I can see your point on Kumar. I did think his jokes could get repetitive elsewhere. But I liked The Mash Report, and thought he was good on it. That said, maybe that was more due to the others. I don’t have access to Dave, so I’ve not seen the version without him as host. Heck, I didn’t know the show had continued. I only ever watched it on YouTube.