What he managed to do was give her a 3 prong outlet that in itself is permitted.But it requires you place a sticker saying NO EQUIPMENT GROUND.Now the violation begins when he plugs a micro into it that REQUIRES an equipment ground
I do not agree. My thought process goes like this: We all know the purpose of equipment grounding - to deactivate the circuit if metal parts become energized, thus alerting us that there is a problem. A 2-wire GFI protected receptacle does the same thing, protects us from shocks, just in a slightly different way. The GFI wont deactivate the circuit when a frayed hot wire come in contact with a metal frame, but it will when you are grounded and touch the energized metal frame.
I don't agree that it is against code to plug a three prong plug into a three prong GFI protected ungrounded receptacle. If it was, why did they put the exception in the NEC that allows this? If they didn't want us to do this they would have just said you can only replace a 2 prong with a 2 prong period! I don't believe the NEC would permit a receptacle outlet that requires the discretion of the homeowner as to what is safe and not safe to plug into it. More generally, I dont believe you can violate the NEC by plugging a UL listed product into a receptacle - this exceeds the scope of the NEC and furthermore would be impossilbe to enforce.