It's much like Nintendo Wii hate but not as obvious.
For the Wii the "Hardcore gamer" could blame the "casuals" for intruding in his beloved world and dismiss their games as shovelware.
Call of Duty has been overrun for a while now by a different crowd: the 10-12 year olds name-callers. for the "Hardcore gamer" it is not as obvious to realize that he is intruding in their domain, because he still believes he belongs there.
That confusion is what generates the hate.
“It appeared that there had even been demonstrations to thank Big Brother for raising the chocolate ration to twenty grams a week. And only yesterday, he reflected, it had been announced that the ration was to be reduced to twenty grams a week. Was it possible that they could swallow that, after only twenty-four hours? Yes, they swallowed it.”
- George Orwell, ‘1984’
