I don't think one would default for that in all cases. I know Fanlore doesn't have a notability requirement, and of course if someone wanted to make those pages they would be free to do so, but there's no need for every fanwork to have its page. Assume for an instant a fic I wrote got a podfic, and that podfic was hugely novel in some way, and made podfic schools change style, and whatever, and some fanlore editor went in and made the page because they felt having the page was necessary for some reason (to register the change, or the discussions, or the meta, or simply so that fans who came afterwards could understand the passing references). Would anyone feel the need to make a page for my perfectly unknown, perfectly average fic? I suspect not, and I don't think that's a situation that needs to change. Or is Fanlore aiming to have a through registry of all fanworks ever being created?