Cynwulf1 in a comment about waterfox left an advise to not trust so much a “popular browser fork” just because it has become popular “saying” it is safer and more private than the original. After some discussion with friends and associates a couple of links came up as appearing to be telling some truth about why some are really bad, some are equally bad, some not so bad, but all with rational arguments and explanations on how they draw those moral conclusions.
As all things published on the internet, by a variety of portrayed experts, should ultimately be taken under a critical eye, “who is publishing this and why do they want me convinced”, these two links below may answer a common question: What browser is “safer” to use, what email provider respects my privacy and anonymity?
https://spyware.neocities.org/articles/browsers.html