> Same as WebUSB - heaven forbid that a website can become more useful by flashing firmware to a device!!

Useful for whom ? The CIA ?

I used it for both GrapheneOS (it flashed a new OS to my Android phone) and for updating the firmware for a niche LoRaWAN electronics board.

The alternative would have been booting to Windows, downloading some dodgy .exe from an advert infested site, and running untrusted code which inexplicably required my admin password.

I'm pleased the Web is able to put a stop to nonsense like that.

People with devices to flash firmware to? Which basically is a lot of things, from musicians to physicians, and a lot in-between.