The long term danger hasn't become clear until recently. Nobody talked about this until Boogaard and Montador died. So a lot of active and recently retired players did not know about CTE when they chose hockey as their careers. It matters that the NHL admits it because it's the equivalent of calling the earth flat. There is obviously a problem and a correlation. I've never been in the NHL, so I can't tell you what they are or aren't telling players about long term brain health. I can tell you they are telling the public that there is no connection between hockey and CTE. But if you pay attention to some of the people who advocate for this kind of education - like Carcillo - you may get a better sense.