So many people were bitching about the ref, and crappy call, and he should have let him continue, blah blah blah. Obviously most of those people have never followed boxing that closely, since this kind of crap has been going on since the beginning of boxing, including and biased scoring by the judges. I'm surprised nobody even thought of the conspiracy theory that there's a good possibility Mayweather could have just paid somebody a million dollars as well, if not all of them. What I always say: in boxing, the only sure way to get the decision is to knock the other guy out, otherwise it's a 50-50 shot.
All that being said as much as I wanted McGregor to win, I think it was the right call. It's better to err on the side of safety rather than let somebody get killed again and the ring which they discovered years ago. Not that Mayweather could ever kill a fly, but you get the point. It looks like McGregor was exhausted at that point and was just going to get pummeled more and more, so even if they allow that in the MMA... Hopefully the judgement calls in the boxing ring support a little more common sense, hard to argue too much.