Steam as a Custom Social Connection

Is it possible to add Steam as a Custom Socieal Connection? Unfortunately steam only supports OpenID 2.0, which doesn’t expose authorization and token endpoints like OAuth 2.0 or OpenID Connect do.

To my knowledge that would be a no as you can only add support for generic OAuth 1 or OAuth 2 providers through that approach which means a pure OpenID one would not be supported out of the box.