[1] https://hackaday.com/2019/07/16/exploring-the-raspberry-pi-4...
At least here in Europe this would actually need to be a USB port which can be charged with any charger and cable.
Not that I'm making excuses here - there's some weird stuff going on inside that lamp. There's a PCB for the battery charger, but the USB-C socket isn't on it, it's on a wire pigtail that connects to the board with another connector. And I don't usually see so many removable connectors inside something made so cheaply. They clearly could have done it correctly in this case, but didn't.
So what, there's ready made breakout boards for a few cents that will give you plain old 5V@500mA, and trigger boards for about 1€ at <10 quantity that you can even configure what they should negotiate for.
These things are actually a godsend if you are a QRP ham radio operator and have a USB-C PPS capable power bank. No more heavy AGM batteries - just connect your radio to the trigger board, wire it up for 12V (if the power bank "only" supports PD) or 13.8V if it supports PPS, and off you go.