I hear your points but I respectfully disagree. Everyone who plays football now knows the danger of playing football. Its not a secret anymore.
Like I said, do I think there will be a decline in kids playing? Probably, ya. Because to your point, I'm sure more research will be done to illustrate the dangers.
But I don't think it's going to come close to jeopardizing the sport.
As long as we continue to watch, and as long as million dollar contracts are given out to these players, I think the NFL will always have a massive waiting list of people who would do anything to make it pro.