Exactly. All this talk of politics is a red herring. Firefox is becoming irrelevant because they have abandoned the features that make them valuable and embraced features that really don't matter. Or are annoying.
Firefox is still my browser of choice, *despite* all the "improvements" they've made over the last few years. To borrow a phrase from long ago, "It sucks less." At least compared to all the rest.
There are no good browsers anymore. Firefox used to be one, but they're driving the "It sucks" bandwagon as hard as they can, and by the time they finally vanish, there will be nothing left to mourn. For now, they're the best of a bad lot.
Their politics is fine. Good, even. It's their software choices that are the root of their downfall.