1207
That's my message
(sopuli.xyz)
I cancelled my subscription since I received a notification that my browser is not supported. Perhaps I should have mentioned my issues with DRM as well, but this may have gone too far. One message is clear, too many messages are noise.
Similar but a bit over 5% if targeting desktop https://gs.statcounter.com/browser-market-share
While there is overlap it definitely isn't 1:1 though. There are tons of ff non-linux users and tons of Linux non-ff users.
This isn't to detract from what you said, just add to it.