Well they could come up with a way to counter or eliminate the tau proteins.
Everything has a price, Racecar drivers get killed so have airline pilots and so on.
I think players should be informed of the possible outcomes, and then they can make a choice.
At dorsetts age, many other things could go wrong with his body too.
He still had a good life.
If you sign up for something dangerous, but has high pay, it is your choice.
The other issue is the players are not just affected by NFL football , it is pee wee thru HS and then college too.
Some have had many blows to the head over all those years.
Then add in drug use , steroid use, alcohol use, poor eating or sleeping habits, and all those things can factor in on
a persons health in old age and the CTE
Some players like Aikman have had concussions, but is still ok 20 years after retiring, so there are other things
that factor into it.
Some players are affected worse than others, so you would have to examine their life carefully to determine why.
Even people who dont play football wind up with various mental issues once in the 60's and beyond.