The risk is real, but I think that the we will see less and less CTE as time goes on. The awareness of the risk has changed dramatically, and lead to changes in rules and changes in technique already. I am an old fart and when I played through high school and college back in the 70's and 80's, the response to "getting your bell rung" was smelling salts and get back into the game or practice, and it was not an uncommon occurrence. Helmets, especially in junior and senior high, and even in many college programs were often old and poorly fitting. Most of the guys now dying and getting diagnosed with CTE played at least partially in an era when that was all standard. It didn't just happen from in a few years in the NFL. They practiced differently with a lot more contact, they tackled differently leading with the head. Coaches were completely ignorant especially in youth football. You had, hopefully less so now, 8, 9, and 10 year olds in practice bashing there heads together repeatedly because they were coached often times by ignorant, obsessive parents whose knowledge consisted of "that's the way we did it back in the day and I am fine." The brain damage is additive, and symptomatic CTE takes years to develop, so what we are seeing manifest now reflects how football was played 10, 20, or 30 years ago. As I said, the risks are real, but I think the game and equipment will continue to evolve to significantly reduce the risk and recognizable football will still be around in 30 years.