I always said the original Crysis was more of a benchmark than a game in the eyes of the community. So once a certain audience has adopted you, changing that can be a pain.
It still goes to show how snobbish some PC enthusiasts can be. Some spend thousands on a top rig and then find they have a difficult time justifiying that investment to themselves aside from 3dMark and SuperPi tests. So when the benchmark-game went too easy on their PCs, naturally they get angry.