I'm an old school #web #developer.
I still test websites on several browsers, including #Firefox.
And no, automated testing is not enough: when you spot a issue you have to debug and fix it.
And no, in many cases I don't care about the marketshare, as some websites' target audience is atipical.
In any case, I cannot disinstall shitty spyware like Firefox or #Chrome, despite not using any of them for my personal browsing.
What bugs me is the extreme hypocrisy of #Mozilla, that always blather about privacy an people, and then always find new ways to sell users habits to #Google.