There's always gotta be one presenter who gets grief and causes a bit a controversy, otherwise we wouldn't be talking about the programming which in turn wouldn't give it publicity. Sort of how a reality TV show purposely picks two conflicting personalities to get people talking about some disagreement or something. Sure, Kravitz and Herbert can be quite annoying with their favouring of British drivers (except strangely Button most of the time), but what do you expect from British presenters, they aren't necessarily going to be parading a Russian driver, for instance.
I'm still a fan of the coverage, though, better than anything I've ever seen for any other motorsport.