Maybe Anderson Silva really thinks that Okami could have continued. This is a similar situation to JBJ having a loss on his record when he shouldn't.
Hamil couldn't continue because of a separated shoulder, not because of elbows. The ref didn't do a good job in really trying to find out what was wrong, he just assumed that the elbows were the driving force in Hamil not being able to continue.
When I look at that up kick, I could hardly believe that he wasn't able to continue. We have seen worse looking up kicks in the UFC and fighters continuing the fight.