So are you saying that code now disallows power originating at the light? Also are multi wire branch circuits with a shared neutral also now disallowed?
I was following this thread a little and I also at first missed that this switch was a special device that could be remotely operated. When I figured out what it was I just assumed it wasnt that it needed a neutral so much to work but that it needed its own source of power to keep it active and waiting to be turned on. The attachment is to small for me to really read all of what it says.
Code does require arc fault protection throughout the house now, and anyone who has installed those breakers on a multi wire branch circuit with a shared neutral has discovered a lot of nuisance tripping.