The existing documentation on this topic shows that AEM 6.3 does not support OpenID, but links to a community solution:
Adobe Experience Manager Help | Understanding Authentication support in AEM
However, the community solution has the notice, "This module has been deprecated and retired."
Does anyone have the current state of OpenID support in Sites 6.4?
I checked with internal AEM ppl, answer is its not supported.
The document says "⁕ Provided via community projects, but not directly supported by Adobe.", can you give a specific link or suggestion?
Yes, that is the same article I referenced in my question.
According to this doc not in older versions- Adobe Experience Manager Help | Understanding Authentication support in AEM
And I see no where in 6.4 docs that is now supported.