In my old version of Linux I've been using straight Firefox primarily for one-off financial transactions. On the scratch installation of the new version I'm now reminded again of all the intrusive third party screwups. I'm moving my primary browser, with shields like a very paranoid uMatrix, to Chromium to party address the privacy issues, and have about decided to also install Chrome, starting it up just for my financial transactions and then exiting. I think there's a lot lower chance Google will siphon off my account information than one of Mozilla's current or future 3rd party partners, especially as Firefox's declining market share makes it ever more desperate.