In answer to both of your 'tamperproof' threads:
WHO is the 'AHJ?' Answering that question answers the others.
The NEC requirements - which at one point wanted EVERY receptacle in a house to be 'tamper resistant', including the one on the ceiling of the garage for the door opener - were inspired by requirements that were first created by the folks who regulate day-care facilities. The 'day-care' folks wanted either tamper-resistant receptacles or GFCI protection for every receptacle that a kid might possibly access.
When the NEC got into the 'tamper resistant' business, they completely disregarded any thought of providing GFCI as an alternate, or worrying about accessibility. They just said 'ALL.'
So, what makes a receptacle 'tamper resistant?' Well, those plastic things you push into the unused receptacles don't count. Nor do previous 'tamper resistant' designs that involve rotating a littly face on the receptacle. Instead, all that matters is that the receptacle be stamped "TR" on the face.