Firefox was going off the rails for a while now. Notice, the worse they become the more they will indulge in politics, censorship, emotional blackmail instead of doing their jobs: building a better browser.
I don't understand this claim. If Mozilla is so awful at developing Firefox, why isn't anyone forking it? Open source is not an empty slogan
That said, I can recognize that developing and maintaining a browser is a massive undertaking while also acknowledging a project taken a turn for the worse. A lot of software these days has weird priorities (most involving cramming more ads in).