> Their usage share is a statistical error, and most of it comes from being shipped with Ubuntu.

This is not true, and is easily verifiable for yourself.

https://data.firefox.com/dashboard/hardware

The vast majority of Firefox usage is on Windows.

I agree, but there's nothing more frustrating than another niche user group imagining that the reason for this failure is Mozilla lacking to address their obscure requests, while Mozilla's real goal is to create a browser for everyone. The truth is that this goal is borderline impossible, and all these double standards (can't count the times I've heard "I'm tired of Firefox, moving to Chrome!") surely aren't helping.