I do feel that, nowadays, it's extremely hard to please most gamers, movie fans, etc.
So yes, I do feel that gamers have become overly critical now. The same with old fans of a franchise, always saying "The old games were the best, these new ones suck", that kind of stuff. Although for many franchises I also think that way, I can still enjoy some of the new installments, others, however, criticize them harshly and can't see past their nostalgia goggles.
I can understand that they don't like change, I don't either. But in order to keep the formula from becoming stale, they got to change some things, otherwise, everyone will complain that it's the same thing as the previous installments.