The table clearly indicates that if I want to create a Runequest Glorantha scenario, I can publish it through Jonstown Compendium.
I just can't figure out what the other line means. If I set a game in Glorantha to play with friends, using whatever mechanisms I want, well, I don't need JC or any publishing tool. If I create a game of my own, set in Glorantha, I can't publish it through Jonstown Compendium, since it's against the JC restrictions. I guess that line in the table is just wrong and there's nothing here to wonder.