Tbh, I can't stand the ****, but I think he is genuinely a terrible commentator, bias aside. He's far too interested in being the center of attention, he never shuts up. A good commentary team shouldn't be noticed very much, at most they should be just keeping you company while you watch the game. But him and Tyler are constantly talking, constantly offering opinions, constantly trying to make soundbites that will "bang" on twitter, instead of just guiding you through the game. They make it impossible to ignore them, they are the dickheads that constantly talk during movies.
They aren't alone in that, there are a ton of these shit commentators who just can't let a few minutes pass without saying something unnecessarily over the top or irksome, but it does my head in. (hoddle/savage/owen/mcpointy all strong contenders for most annoying).
He's marginally better as a pundit, as he clearly has time to prepare a bit (or have others prepare what he's going to say) but when he's left to just ramble on he's awful. His post game coverage is always much worse than his pregame as well, full of over the top nonsense, cliches and stating the obvious, which leads me to believe that he's just not very insightful when put on the spot.
I really enjoy Don Goodman on the CHampionship coverage (and used to enjoy Hinchcliffe when he did that, before he sold his soul to get the PL games). He's just in the background, having an informal chat with the main commentator most of the time. He doesn't go over the top, he doesn't scream like a girl, he's pretty much ignorable if you want, but is perfectly pleasant.