I wouldn't count on it. They made a movie about it and in it's entire run it made less than opening weekend of Kung Panda 3.
The NFL is not going anywhere. In fact, once they sort out the concussion problem at the lower levels, where most of the real damage is done, the NFL will be better off for it.
Whether or not kids play football when they're young, in HS, college, whatever, the NFL is still going to need 53 players per team.
That's why Ed Nelson, who played a year on the men's hoops team and never played a down of football in his life, was signed by the Rams.
And Nelson was not particularly athletic, either. It's pretty likely that as HS and pee wee football players shrink in numbers, that college and pro teams will start using athletes that didn't play football at the previous level.