Hey... football is "football"! If you think it's too rough for you, then don't play. Take up badminton or something. (Personally, I do believe football is too rough and risky... but there are lots of other sports.)
The point is, it is a game that is played overwhelmingly by black guys, not a bunch of soft suburbanites. The real question is how is youth participation in the black community and have they seen a similar drop? I have a feeling that the drop in youth participation is largely among soft, white suburbanites who were never going to get a sniff at the NFL in the first place, so it means nothing.
BTW, the racial breakdown is going to be a key component of the attempted take down of football. Look for the line of argumentation to be as such, there are a bunch of rich, white owners who are leaving these poor black guys out to dry. Mark my words. The end result is the left will help out these black guys by denying them the chance to go to college and make millions of dollars. It always seems like the people who the left tries to help always end up suffering the most.
In the eyes of the left, the NFL makes too much money and they will try to destroy it, because that's what they do.