I watched all the great games in the 70s when I was a wee lad, and you are right I’ll bet very few kids watch the NFL.
I was in college during the early 70’s. Dormitories on Sunday afternoons and Monday nights were full of guys watching the NFL non-stop. Those guys are the NFL fans of today (until now). Advance ahead to 2017 and what do you find? Colleges full of girls and fewer guys. Society telling guys to feminize. Many fewer dorm rooms with the NFL on the TV. And finally, many fewer young males entering into the NFL sphere for the future. The tipping point has been reached and there is no turning back. Kaepernick and Goodell did not cause this but they sure accelerated it. Oh, as for me, I haven’t watched the NFL in years. I still love baseball and would be horrified if the players and the executives wreck that game too. I sure hope not.