They not just lost a few hundred Ks of users, they lost a huge chunk of evangelist. And worst than that, turning into anti-evangelist. I am that and so do many of my colleagues. I believe this is a trend though not many people willing to mention it. So seeing firefox dropped significant market share since 2017-ish to some reflect what we anti-evangelist are doing "unconsciously". This is what happen when the company decide to go with some smart-alec UI/UX designers that didn't do much market feedback but trusting their own instinct. Probably Jonny Ives wanna be.