Steps up on soap box.
Domestic and industrial plugs are designed so the earth pin is the last part to leave the socket. Wiring of said plugs should be completed as per the paper instructions on the plug, if followed correctly the live wire would be pulled out first, then the neutral and lastly the earth. This gives total protection until the RCD trips which should be 30m/s from any stray current detection. I would like a £ for everytime I have had to correct the wiring in both domestic and industrial plugs.
Almost all new electrical items are fitted with moulded plugs, this does give the plug the ability to withstand the odd accidental pull out via tripping over cable etc etc.
Pulling plugs by the cable is a no no, moulded plug or not. It puts a strain on the cable, on the pinz and can crack the socket outlet.......if somone wants to do this they deserve what they get. Stuff is designed for safety, rules and regs are made to reduce the chances of accidents.......the list goes on and on...............you can make things fool proof but you can't make things idiot proof.
Off soap box.