I agree, that’s the dream at least. Even Mozilla has been making poor choices (AI and changes to their privacy policy with more nuanced language so they can share your data with their partners, which goes directly against their old promise to never share it or collect it). My faith in them is very much shaken but yeah, they are still better than the alternative…for now.
For what I remember they only compiled it to Windows, Mac, Linux, BSD and some ARM architectures. You can always compile it yourself altho, the wait time is lengthy.
No. If you are looking for binaries you have them here https://ungoogled-software.github.io/ungoogled-chromium-binaries/
Vivaldi is better than most. Most of it, is open-source, only the UI is not, for marketing/brand, etc reasons (they explained it better here https://vivaldi.com/blog/technology/why-isnt-vivaldi-browser-open-source/). I prefer to use Zen or arkenfox but since Mozilla appears to be following the “AI everywhere” route I will stick with Zen for now. For work related, sometimes I have to use a chromium browser so I use Vivaldi since I don’t like Brave. One other option would be to use ungoogled-chromium which is chromium but without any google spyware or services for that matter but, because of that, you can’t easily install extensions so it’s a trade-off.
After they broke their promise to never collect our data, I’m not very optimistic towards the future of FF but for now, it’s kinda all we have