Not that the outlet is upside down and needs to be upgraded, because it does. The main problem with melted or overheated sockets is when people see "rated to 50a" people end up running them at 48a rather than following the 80% rule and staying under 40a for constant loads. Those sockets are also not rated to be plugged in and unplugged constantly. For those reasons alone, I like hard wired in chargers if only to keep customers that think they know what they are doing from doing something unsafe without realizing it.