Rolly was getting tagged up in the last exchange and landed nothing. He was also down on the cards lol.
Ref got scared that Rolly was gonna get put to bed in that exchange, so he quickly jumped in save him.
The right guy won. Remember the sport of boxing is dead. Its sports entertainment now and the more marketable fighter wins on points unless you really kick his ass. It's about building superheroes to duke it out in "super fights" to make lots nd lots of money, its not about competiting to see who the best is.
So when you understand that, you know Munguia deserved the win.
Rolly gets KTFO by tank. In his return, Rolly goes down on all cards and about to take a dirt nap from a middle aged man but is gifted the fight by the ref.
Gotta be literally the worst run of all time that leads to capturing a WBO championship.