[Gigachad]

On iOS you can’t use usb anyway. Even an actual app can’t use usb outside of the wrapper APIs for file access and stuff. So it doesn’t really matter what safari supports here. And on macOS you can use any browser you want.

[leptons]

I don't care about WebUSB on iOS, but I do care about Apple blocking WebBluetooth on iOS, as well as blocking every other browser engine.