alt Hacker NewsI think the GP's point is that this requires a 12V-capable USB power supply.
I have converted pretty much everything I have to USB-C, from toothbrushes to old laptops, and am very happy with the results. My solution is to only own high-quality power supplies with good support for PD. Having done this, the question "Why isn't this thing charging?" doesn't really arise.
The common device that this doesn’t work well for is the Raspberry Pi 5. For full power mode it needs an unusual 5V/5A power supply, and that is quite unusual.