There will be times when the struggle seems impossible. Alone, unsure, dwarfed by the scale of the enemy. Freedom is a pure idea. It occurs spontaneously and without instruction. Random acts of insurrection are occurring constantly. There are whole armies, battalions that have no idea that they've already enlisted in the cause. And even the smallest act of insurrection pushes our lines forward. Tyranny requires constant effort. It breaks, it leaks. Authority is brittle. Oppression is the mask of fear.
I'm sure that's the condition, to use your data (that they protect of course) to better improve the browser. And I'm sure they are in a country where they don't have to show logs (that I'm sure they don't keep, yet somehow use your data).
They need to stick with just the browser, period. Stop trying to drift into other areas. Firefox has unfortunately gotten too heavy for what it should be, and adding even more features (good or bad) doesn't help the core performance.
The other options out there have their pluses and minuses, but if Firefox keeps pushing people will live with the negatives of the browsers that seem to care about the browsing experience of their users.