When games have a perceived quality shift people will attack the newer fans because they see them as the reason why the company is allowed to "get away" with producing the worse thing. I don't know how you can avoid that and still have a community that holds the thing they love to a standard. Some communities just like to fight about which games better, Im not really sure what else there is to even talk about with assassins creed (i've only played 2 of the games so idk).