A single concussion of this magnitude rarely, if ever, results in permanent brain damage. The effect is cumulative, especially if two injuries occur within a short time period. I am no longer a football fan, having seen too many long-term injuries sustained in the pursuit of transient glory. If so, he should not be allowed to continue. This is obviously a strong opinion, not based upon unequivocal proof or personal neurologic knowledge of his injuries.
Macho heroics are great.
Ignorance of the consequences of such heroism isn't. I am infamous for having a short and volatile temper. I try to keep it under wraps, but it seems to leak out in minor explosions. My father had an awful temper and my family life was filled with constant fighting. But I've tried so hard to work through this, talk about it with my therapist and my partner, etc., and I still feel this sense of inner rage constantly roiling within me.