Your poll is broken, there's no neutral choice of 'I listen to him for entertainment, but he makes valid points on existing games that shouldn't bother me if I was legitimately excited to play it.' I know its a tad long, but hey thats where I stand with him.
More towards the topic, I always figured he was harsh because no one else will be. Xplay, as an example, acts like 'brutally honest' game review, but they point out none of the flaws of top high end games. They hate and poke the most fun on old genres, series, and generally anything they think will get a laugh or two for more viewers.
I watch Yahtzee both before and after I have a game he reviewed, to get one of those 'yeah hes right' type laughs, but by all means doesn't make me not like the game at all. He doesn't have scores because they are a poor excuse for actual facts of what works, whats broken, and what is legitimately fun.
As with all my posts, this is entirely my standpoint/opinion and not ment to cause epic flames of any kind.