“Hitting instead of tackling - these guys hit trying to hurt the other guy and a lot times just bounce off not stopping the play.”
Similar sort of thing happened to the NHL. Years ago, taking out a man using your shoulder or your hips was an art form, particularly with guys that my Dad grew up with in the 1950s and 1960s (Bob Baun, Leo Boivin, Gilles Marotte, Marcel Bonin, etc) and even when I was a kid (Brian Glennie and Perry Miller). Nowadays, it almost always involves slamming someone into the boards and/or getting a stick or elbow into it. The helmets and shields were supposed to make the game safer by preventing those kind of injuries, but for the most part it simply created a complete disregard for the head. Concussions and back and neck injuries are now an appalling problem.