My backup & 2nd option is Ungoogled-chromium...
My FF was not affected as I have the voluntary BS turned off as well.
Ungoogled-chromium (64bit) is my backup browser & IE11 for M$ downloads fully updated as possible.
I don't know the rules for links but I will try here. It is possible to download & run an update program. And you have the ability to access the Google app store without logging in & download apps you trust. Kind of what FF should do. As time goes on I think FF will stray further & further away from the users wishes. Hard to find a computer today that is not filled with commercial & government spyware.
Download page for (Ungoogled Chromium)
MarmadukeDownloadLatestStableUngoogledChromium binaries (64-bit and 32-bit)
Installation Guide for (Ungoogled Chromium)
(Ungoogled Chromium) extensions (Once installed just pick/install extensions normally)
Chromium Web Store for using Google Extension store/downloads wihout logging in. Just go there & install from within Ungoogled Chrome browser normally...
https://github.com/NeverDecaf/chromium-web-store/releases/tag/v1.1.1 LATEST .crx file
auto updates from browser as well as all other extensions...