You've got an entire generation of presenters who don't actually know the slightest about what they are presenting. Not that they give a fuck to do the research anyway. They are only telly, standing where people tell them, wearing clothes picked for them and reading other peoples scripts. But hey, they are on TV and thats the main thing, right?
I know this is an unfashionable view, but this is why someone like Bill Oddie or Alan Titchmarsh is actually watchable even if you have no interest in the topic. Not only can they present, but when they tell you something you actually believe it has come from them and their experience, as opposed to read from an autocue. Jools Holland can't technically present for ratshit, but his sheer engagement with what he is doing gets him through with style.
Sorry. Ranting now. Must stop.