"it depends" is a fine answer for whether a device supports something. that's how USB-A/B worked. you didn't know if the device supported quick charging, work

"it depends" is a fine answer for whether a device supports something. that's how USB-A/B worked. you didn't know if the device supported quick charging, worked at better than USB 1.1 speed, or even if it supported data transfer. there's lots of power-only USB devices. But you at least could make a fair assumption that the cable you were trying to use supported all of that (beyond the rare power-only cables). For me the real killer with USB-C is the wide variety of cables that all look physically identical. it's fairly easy to keep track of what features a computer, phone, or peripheral has. but having to keep track of which features each cable supports is a huge pain in the ass. It means i can't just have a box of random USB cables on my shelf, and grab one when i need one.