Lower levels of football are the safer ones though. In terms of reducing CTE it would be better to remove NFL then College. Pee wee football is the safest level of football.
Additionally, people in college and NFL have played waaay more football which increases the chance of CTE. 95% of HS football players will not play beyond HS.
Removing HS football and lower wouldn’t make a big difference and would negatively impact the most people.