There was a former old NHL’er who was just post humously diagnosed with CTE. Lots of variables (fewer helmets, more fighting in the old game) but I was surprised to hear that, given the old men’s game was noticeably slower. Thought it was a skill guy, not a fighter, and he still had it. Clearly our bodies are not built to have our brains rattled. To me, the women’s game should really proceed with caution. Maybe those annoying tripping penalties are worth what they prevent.
It was Henri Richard. Most definitely a skill player.
One of the things about CTE that people are constantly getting wrong is the belief that it is the result of big hits. Not necessarily true. It is more the result of constant hits, and they can be all small hits.
This is why linesman in football have the highest rate of CTE. They are constantly getting their heads "tapped" (note, I didn't use the word "hit" on purpose) around on every play when they are blocking or trying to get through a block.
The skill positions may receive harder hits, especially receivers or quarterbacks when they are on the receiving end of a hard open field tackle. But, they don't happen every play. Even the receivers who do block on running plays, aren't blocking like linesmen are.
The theory -- and I hope I explan this correctly -- is everytime the head gets bounced around, the brain needs to repair itself. It doesn't matter how hard the hits are, just that the hit requires a repair. It's these constant repairs, causing "lesions," which results in CTE. (And genetics can apparently play a part, too.)
Based on this, it's no surprise the fighters in hockey are getting CTE. But, perhaps some of these skill players played the type of game which constantly put them in the way of checks -- like trying to gain position in front of the net. Again, it doesn't matter how hard these checks are, only that they are plentiful.
This is also why when people talk about helmets, it may not matter much. A helmet protects a shock from getting to your skull (think crash helmet in racing) and the subsequent damage that shock can do to the brain, but it does nothing when your head is jostled around causing the brain (which sits in a jelly like substance in your head) from sloshing around. And, that's what causes the damage leading to CTE. Helmets don't necessarily stop that.
If I got any of this wrong, please correct me.