While I personally think there is a universally agreed upon idea of public access (as in non-exclusive), I was thinking about how other platforms handle it, and

While I personally think there is a universally agreed upon idea of public access (as in non-exclusive), I was thinking about how other platforms handle it, and Facebook, AFAIK, seemed to have moved to the "everyone" category at some point. Not sure about other platforms. With "everyone", you could also think of it as everyone [on the platform], which would be a subset of "public".