> There shouldn't even need to be a label. A USB-C cable should be a USB-C cable should be a USB-C cable.

I think you are confused. USB-C refers to the connector type, not the cable, let alone the protocol.

https://en.wikipedia.org/wiki/USB-C

Also keep in mind that the standard supports cables with USB-C connectors in one end and USB-A connectors in another end. What do you expect the USB-C end to do?