Yes, that works fine. All non-Workspace services continue to work that way. I discovered it accidentally and I am quite glad that I do not have to migrate many SSO accounts created with Google Apps / G Suite / Workspace over the last decade. The deprecation definitely taught me a lesson in avoiding vendor lockins.
Luckily not too many, but it still strikes me just how stupid I was to use that option on any site, instead of an email and password.