Sort of. I first consider what type of gamer he is and what he prefers (since, and seriously, don't deny it; he's extremely biased), then I remember what he necessarily said about the game. If he liked some parts of it, then that means he just had an issue with a certain part of the game, and identifying what he found wrong can decide whether it's gamebreaking or simply really annoying to someone like him trained to point this kind of stuff out.
If he REALLY hated a game, then it just depends on what game it is. I agree with some of the complaints he had with Brawl, but overall I fall into a different demographic than Yahtzee and thus I find the game more enjoyable than he probably ever will. I still agree with him, though, and I'm not sending him hate mail on how he can't enjoy it. What he finds enjoyable I might not, and what I find he might not, thus I didn't really pay attention to his Brawl review aside from the jokes.
However, since he and I share similar tastes for shooter games and whatnot, his Mindjack review pretty much put that game in the "Never play: EVER" list. Then again, I've already seen plenty of other reviews giving Mindjack crap for its horrible story, horrible gameplay, etc., so I was kinda biased against it before I even saw Yahtzee's review.