It used to be a fairly universal rule in Florida that all wire coming down a wall to a switch or outlet was in an EMT sleeve unless it was in a covered wall with enough depth to get 1.25" BACK. If this was 1x furring over block with drywall it was in pipe. Same in the unfinished spaces. That went away when we adopted the NEC, unaltered and now they use a stacker to get it 1.25" from the furring strip sideways but it is still right behind the drywall with a CMU "anvil" behind it so the nail has to puncture the cable.
A giant step backward in my opinion.
I suppose when we actually kill a few people they will reconsider like they did on bonding steel studs.
