I think this is for mobile phones primarily and any devices that today use a multitude of OEM-specific chargers.
Enforced at port of entry (customs).
So they will effectively ban imports of all outdoor weather rated 'smart products'?
I don't think so. This only applies to mobile phones. What outdoor rated smart products did you have in mind?
Smart home cameras.
There's a pretty simple solution there. USB-IF could just specify a waterproof connector. They could even make a waterproof housing that could slip over an existing USB-C.