I have followed the instructions, albeit lacking, at https://www.drupal.org/node/2780659 → .
I enabled Social Post, then Social Post Facebook. I went to /user/X/edit and added Facebook as per the normal steps expected. The user is now authorized, and at /admin/config/social-api/social-post/facebook I'm able to see the implementer. At /admin/config/social-api/social-post/facebook/users I am able to see the FBID, Screen Name, and UID.
From this point forward, nothing works. If I create an article, nothing is posted to my profile. The related issue appears to indicate there should be some form of UI toggle I can set to enable Social Post Facebook for that posting, yet I'm unable to find it. In fact, aside from installing the module and authorizing the FB user, I can't seem to figure out any actual usability by this module. Am I missing something blatantly obvious?
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It's likely this issue predates Contrib.social: some issue and comment data are missing.