I was about to reply with a “oh, really? Whoops, I maybe should I have looked a little deeper” and edited for the post title, but I’m not so sure, looking into the first link you posted.

RE: phabricator…I don’t know what that service is or is for, so I can’t comment if there’s any proof therein.

But the “how to submit a patch” page linked has a section that seems to at least suggest that their Github repo is now first-class, per the first line of the section.