Firefox has like 3% marketshare now and is disappearing into obscurity. Also they are no longer about a "free internet" ... despite pushing this ideology for years: Mozilla says ‘deplatforming’ Trump isn't enough, wants to shield internet from ‘bad actors’ as users uninstall Firefox in disgust — RT USA NewsFirefox is the way to go! 👍🏻
With so little marketshare, making comments that go against the very thing people use it for is pretty stupid. I'd recommend Brave browser if you care about privacy. Also, since 90% of the internet is being browsed on by Chrome or a Chromium-based browser (which is what Brave is), you know it's going to work with most sites. On top of that, Brave is creating their own search engine soon that doesn't track its users: Search | Brave Browser