> I'm developing a system which uses webapp to interact with device over USB. It works in Chrome. It's sad for me to not support Firefox
As a cautionary tale: the moment Firefox shipped support for a hardware API they immediately ran into sites abusing them. Of course, Chrome doesn't even hide them behind a user prompt. https://twitter.com/denschub/status/1582730985778556931 (and comment)
There are reasons Firefox opposes these standards. Chrome is neither your friend nor does it care for the web. Why are you so willing to give a carte blanche to a power struggle (Chrome/Web vs. Android) inside a web advertising company is beyond me.