2) You mean the same players that are now brain damaged and suing the NFL?
3) Bringing up past players is a moot point. You are under the impression that they as perfectly sound from a technique standpoint. These pro athletes have coach's for a reason. Because they aren't perfect and still need to improve their technique.
4) for every player complaining I can name 1 or 2 that are for the rule. Players ***** about everything.