In https://www.romulation.org/Retro/. Far down it says: 'No downloads fit your sorting criteria.' Isn't that text a bit pointless, since there aren't any downloads on that page?
That's how the system works, it does a check for directories and a check for ROMs, it just means that we have no ROMs listed only under "Retro", it might be a bit pointless but it's more hassle to make it not display if there's a directory than just displaying it.