I'm /u/zjz on wallstreetbets. That google sign-in flow thing has caused us a good bit of hassle because people became convinced that usernames fitting the Word-Word-#### scheme are all bots.

It doesn't help that the kind of person who lets a google sign-in type flow suggest a username for them is probably a lazy commenter.

Perhaps an announcement in the future when a user-facing identifier is auto-generated would be wise.