Yeah a lot of people are just anti cod because it's so popular/activision. Most haven't really played it
Most people are anti COD because they have moved away from a fun franchise to just milking their fans.
COD: BLOPS is essentially the same game as COD 4 with new skins, and they even manage to balls up the optimisation on the PC, so it was basically unplayable for a lot of people.
Last COD game I buy - i've played it for ~15 hours in all, but i got nothing new from the game, so for me there is no point buying even more COD in the future until they start to "innovate".