Earlier quoted context omitted.
> I'd much rather keep rechargeable AA(A)s on hand for that kind of stuff. https://www.amazon.com/s?k=rechargeable+aa+batteries+usb+c But in practice, I greatly prefer devices with integrated batteries, because they're more likely to be able to give me useful feedback about the battery level (e.g. a reliable low-battery indicator), rather than just winding down, or having a low-battery indicator with only a passing c…
I'm aware these aren't mutually exclusive. To me, the bigger benefit of not integrating them is that I can just rotate in freshly charged batteries anytime they die, and don't have to care about being within proximity of a charger. (I also find this important for gamepads, to the extent that I don't just opt to play wired.)
But in the absence of that, I'll take USB-C and the ability to charge while actively using. I find that useful even for wireless gamepads, because then I can attach them to a generic charger on one side of the room, and not run a cable across the room to the console/TV area, because the communication is still wireless and only the power isn't.