Google OAuth2 사용자에게 "user1", "user2"... 같은 사용자명이 발급되는 것을 방지하는 방법?

[pmusaraj (Penar Musaraj)]

I am pretty sure this is coming from this site setting

If unchecked, the username picker will default to userN, especially if the user doesn’t have a display name in their upstream account.

Security 1, convenience 0