I agree with him on many topics, and in particular we share the same hatred for modern shooters. I was rather disappointed from him when not only he ommited Dark Souls from his top 5 2011 games list, but he actually totally dismissed it with a vulgar comment that he made.
To your question, no he doesn't affect me whether I will buy a game, or not, because I never listen to critics before buying a game, I buy games based only on my own judgement and experience, and perhaps instinct. I listen to him and the other reviewers after I finish a game, just out of curiocity to see how my opinion matches with the critics.