Earlier quoted context omitted.
Use one of the forks. librewolf, waterfox, zen. Firefox itself lost trust when Mozilla tried to push the new Terms of Use earlier this year. That was so aggressively user-hostile that nobody should trust Mozilla ever again. Using a fork puts an insulation layer between you and Mozilla. Librewolf is just a directly de-mozillaed and privacy-enhanced Firefox, similar to Ungoogled Chromium. I've been trying to get in the…
The problem is that all those forks are beholden to Mozilla's corporate interests the same way the chromium derivatives are beholden to Google's corporate interests. What we need is one of the newer independent engines to mature - libweb, servo or blitz.
Librewolf is trying to be de-Mozillaed, privacy-enhanced Firefox, so it'll probably take whatever not-overtly-spyware patches Mozilla adds. Some others, like Waterfox and Pale Moon, are more selective.