truth be told, since he is a professional fighter, I don't care about his health. I didn't care about mine during my kickboxing days, nor I do now during my judoka days (one of my fingers is so twisted that it hurts when it is cold.) I am aware of the risks of my hobby (I don't even get money from it.) Do you think pros aren't aware of theirs? There are two options:
a) they don't now the risk, thus, since they were born stupid, ko's won't change that;
b) they are aware of the risks, and they still chose to do it. I respect they choices because they are grown ups, not kids.
Why is this even a debate?