It looks like an old world rule applied to the new world. In the old world it was expensive to publish, so it was accepted that publication takes place in non-f

It looks like an old world rule applied to the new world. In the old world it was expensive to publish, so it was accepted that publication takes place in non-free (as in free beer) media. In the new world publication is almost free, and perhaps one would just need to register a URI to point at all relevant information.