Not really, actually mugging someone would be a lot of risk for unknown and surely lower return. What these guys are doing won't work all the time, but when it

Not really, actually mugging someone would be a lot of risk for unknown and surely lower return. What these guys are doing won't work all the time, but when it does the return is very high as they can steal money you don't even have if they get a credit card. They also wouldn't have to deal with any issues like getting caught by CCTV, a group of well wishers or the ever elusive police patrol.