I agree on the old days. The linemen actually blocked and didn’t hold on to each other every play. I agree with the not taking someone out by their head. The receivers have their hands all over each other every play. I believe interference would be called every play if it was a 70’s game. When I was in school they taught you to play, now they teach you what to do and not get caught doing it. Drives me nuts. I played basketball against the local coaches for years. I got pissed one game and told them to let go of my dam shirt and play basketball. It is like that in all of our sports.