> It's developers not testing their web apps with Firefox, since it has such a small market share.

This is exactly why I still use Firefox. Brave is good, no doubt. I keep it installed for the blue moons where I want a Chromium browser for something.

But I refuse to contribute to the Chromium monopoly. Every time I use a Chromium browser, I'm telling web developers that its okay to discriminate against other browser engines (Firefox, Safari, Ladybird).