This has a lot to do with Mayweather's game style. Generally, Mayweather doesn't take the initiative to attack, and he doesn't like to confront his opponent head-on. He is better at defending and fighting back and swimming to consume his opponent. Because of his game style of cunning like a fox and slippery like a loach, it is difficult for him to suffer losses and his face is rarely injured, so he is named Pretty? Boy (beautiful boy).
Many boxing fans don't appreciate Mayweather's style of play. They prefer to see the bloody confrontation between boxing and meat. They think that he is taking advantage of the rules and goes against the strong spirit of boxing, so they nicknamed him "Mei Paopao" and "No Deterrence" and joked that his track and field skills in the boxing ring are at their peak.
There are quite a few boxers who play guerrilla style, but only Mayweather can achieve such achievements. Apart from reaching the peak in defense and footwork skills, it must be admitted that he is also an out-and-out genius in on-the-spot awareness and risk prediction.