I wanted to add an account for clients still on Google services, but when I clicked “Google” button from add accounts, the regular browser was opened up for sign-in purposes with special links that I couldn’t copy to a private window. Given how privacy-invasive Google is & how many exceptions Mozilla makes for letting Google have special privileges in the browser, I would expect this authentication flow be done entirely in an entirely separate web view or at least a private window so as to not keep Google data associated with primary browsing & whose tracking data can be completely wiped after finishing the app keys setup flow.
All I want is to sync specifically the calendar & mail from these accounts with no overlap with my browsing.