I kind of feel like the whole “USB-C” thing on flashlights is a joke - the benefit of USB-C over all the other variants of USB is the ability for them to dynamically work out between the devices which device needs charging and which can be used to charge from, for example if I plug my phone into my laptop and the phone gets charged or if I plug my phone into my battery pack, the phone gets charged - but plugging the battery pack into the laptop, the laptop gets charged, all with the same cable.
That’s useful!
Being able to charge my flashlight from my battery pack or charge my phone from my flashlight, with the same cable, that’s also useful.
The way it’s implemented on flashlights is nothing more than a very mild convenience in it having the same connector - especially useless if the connector it needs (USB-A to USB-C) is one of the less common types available. It’d actually be much easier to find a USB-A to USB Mini or Micro cable.
So the whole things a bit of a sham…