No, sadly it does not. And then I would be just dependant on mozillas leadership and sadly I do not trust them either.
Ladybird and Kling I would trust, but it is not advanced enough yet. But they are making progress!
"What features do you need that only Chromium can give you?"
WebGPU and sone features with webworkers.
That, crypto, and the Mr.Robot extension fiasco burned a _lot_ of goodwill.
I hadn't heard about the Mr.Robot fiasco, that's seriously troubling..
As for the tracking - I'm pretty sure Firefox blocks a lot of those by default, last time I checked it was plastered all across their homepage. It's not 100% effective, but if them making an effort to do the right thing pushes you away, you might be asking too much unfortunately. Building an entire browser takes a lot of energy and time, and Firefox seems like the kind of browser that's worth it in the long term.
Game engine.
"As for the tracking - I'm pretty sure Firefox blocks a lot of those by default, last time I checked it was plastered all across their homepage"
And the thing is, that firefox itself is tracking you and sends that data home. Maybe look up what "studies" mean. But so far at least you can opt out of it, unlike with chrome.
But firefox studies means, (or can mean), that firefox will track you and sell that data to ad companies, if you "allow" it. Which everyone does, by default. This behavior from a "privacy orientated" company is close to a scam by me. Because a normal user who believes the privacy promise, won't know of, nor find these settings.
And apparently now there is a third setting(on Firefox mobile, but not on desktop), that at least openly tells you they share tracking data with a ad companies.
edit: ok, that is weirdly funny. "Adjust" the ad company firefox is apparently working together with, has a website, that does not really load in firefox at all, but only in chrome
There is a switch with "marketing data".
And as far as I understood, this thing came out of "Firefox studies". They branded it as experiments, but I have not seen a experiment not related to tracking. Most famously the Mr.Robo scandal, but that only gained visibility, because it was visible. Others just ran in the background. But you should be able to look, what kind of "studies" did run on your computer.