Just read that and nowhere did he say he was ashamed of crying. He was ashamed of how he acted towards his fellow competitors. How he pocketed the medal and refused to acknowledge the others on the podium. There, of course, may be another interview where he says he is ashamed of crying but the one I read was more about the petulance than the tears. He was basically saying he is a bad loser and that he even acts that way to friends when losing at FIFA.
This boxer, the runner, the hockey players, the winners, the losers all have their own personal story and I think it is extremely arrogant of people to put it all on them to be man enough and not she a tear.
It is all relative, we can all point to specific examples where a man or a woman reacted in a certain way but it does not answer the question 'Why are some men uncomfortable seeing another man cry, regardless of the reasons for the tears'.
I am not in a position to say that it isn't OK, I for one am not in to all that masculine 'back in my day I would have got leathered for showing weakness' crap. Secondly, we do not know the whole story, maybe they were doing it to make a loved one proud, maybe there has been a loss in their family/friends network and it is just a release of those emotions that they can't control. I would never ever consider to have a go at these people.