A bit of reading history might help. Firefox is basically using sponsorship money to evade what happened to quite a lot of companies in the computer industry, both software and hardware side; Somebody appeared and did it better.
I used to use Firefox a lot too but the selling points just arent there anymore. For the sake of this comment i'll install it as i type and see if it's changed but a pretty harsh truth is that it got left in the dust by Chrome. As they smartly say being the biggest doesn't matter...
...But the self-mutilation left it worse than most chromium based browsers in all of their previously strong points. They've embraced the spartan Chrome-style to the point where customization doesn't really matter anymore - What is there really to customize?
What most people think nowadays when it comes to modifying a browser is basically convinience bloat: My most used websites are here, i can see info about stuff i like here... Firefox technically has or at least had brains in it's ranks that could figure out what the next big thing might be or what we didn't know we needed yet. But what i just used was an off-brand Chrome that advertised it's privacy in a tab and then functioned almost exactly the same as Edge.
In a very melancholic goodbye the checkbox to give feedback on the uninstaller is unchecked by default.