This one has been tinkling about in my head for a few months, finally got around to committing it to "paper". In essence, this guide demonstrates how to use one firebase authenticated user to authenticate your app with Firebase with secure rules, and to then allow the sign up and sign in of users, who can have a range of read / write permissions, depending on how you setup your app. AIA file now provided.
🔥"Subvert" Firebase Authentication or (One Authenticated User for Multiple User Logins)
But now we all get benefit of it.. Expected this behavior to comeout from anyone and you did , as usual (Unique).. Classic.. Thank you for the tutorial @TIMAI2