It stands to reason that people will hate whatever the direct counter to their play style is. I guarantee most people complaining are those who like to stay back and ads. The non-confrontational players in other words. I bet those who like to run the map and shotgun people, those who push the enemy back aren't really complaining about it cuz they expect it. If you get shoulder charged more than 3 times in a match then you're very not good at adapting. If you can't change up your play style to suit your needs then you haven't been playing long enough to complain or you simply need to re-evaluate your play style altogether.