This is the reason why I was initially excited about, and then disenchanted with Vivaldi. I initially had the impression that they weren't going to use Chromium, and that their return to Opera's roots meant returning to the spirit of innovation that made Opera so compelling back in the day (I will never stop singing the praises of Opera Unite). But then I learned that Vivaldi, too, would be based on Chromium.

I question the longevity and/or motives of institutions maintaining any of those builds other than possibly Microsoft.

And believe me, if you would have asked me if trusting Microsoft was the safe bet 20 years ago, I would have said you were nuts. But here we are.

Try the privacy sales pitch. And for mobile there is Firefox-Focus. Yes you have to do a lot of typing, but hell do I not miss targeted advertisement in browser.