This is google. They've got everything. I use google password manager, wallet, biometrics to log into my google smartphone and google authenticator for my 2FA. I use google voice and maps, photos, youtube, search, docs, gmail and gemini for AI.
Imagine if you found an authentication backdoor - a way to impersonate any account and you could start sucking down data. You do it for 5 billion people and charged google $6.40 per person not to put it on Tor.