I may be the odd one but I dropped FF after the drama over brendin eich and his support of prop 8. I just did not feel the same after seeing how he was attacked for his personal contributions. There was just some hateful stuff that came from both sides that really uncovered some toxic personalities in the FF legion.
When you're a CEO, you're also the face of the company. His "personal contributions" were to support banning of same sex marriage, and it was just 5 years earlier. That's just unacceptable, even in 2014. It really showed how politics work inside companies like Mozilla. But you're not alone. That year lots of users dropped Firefox.
I wish all disagreements didn't have to be framed in such stark terms.
I don't live in or care much for California, so I had no dog in the fight, but I also did not like the gang-up on Eich and I don't understand the argument that he had to be kicked out because of how people might feel - it seems like it's the default position to work for someone who thinks you shouldn't have some right or another, or some other person should have more rights than you. It did not affect my usage of Firefox.
I did eventually download Brave and I use it for maybe a quarter of my web browsing, but that happened because a site I like stopped working in Firefox. I use Edge for a lot of other stuff - known safe sites, basically. I use Firefox simply out of inertia and because I like NoScript and the exact way NoScript works. A lot of the stuff I like about it is gone now, as they keep removing features I use. I don't have any affection for Mozilla or Firefox anymore. Metrics-based development is always a fool's errand - removing feature after feature that 1% of your install base uses is a great way to lose half your users when you remove > 50 features.
In the end, I don't think Mozilla understood where their strength came from. They weren't installed by default. They didn't have massive marketing campaigns like Google/Chrome. They weren't bundled in installers. They had one thing: power users, and power users evangelizing to their friends and family. They've alienated power users, and now all that's left is people running on inertia and people really worried about open source. Not a winning combination.
[1] https://en.wikipedia.org/wiki/2008_California_Proposition_8