Football

I don't know, maybe he always was one but the stuff he did after his football career was hard to get past.

I think some people don't handle the fame well. Maybe they like it a little too much and they think it means something it doesn't.

So, you're really good at football - so you think that makes you a doctor, a politician, a tv show host, etc. Nope, you're just really good at football, and just for a given period of years. That's it.

I'm not saying its not CTE, but he doesn't seem to be showing the symptoms yet. I'm not sure how common it is in QBs.