I had always assumed that at some point someone would write or adapt a wikibot for fanlore and then mass edits could be done. But I don't know enough about wikis to write one. I'm just against retroactive template changes without automatization unless the need is really dire or the template not used more than a couple of dozen times at most.

I already thought it astonishing that the moving around in the wake of the naming scheme change wasn't somehow automated. I mean, surely it must be possible to cull the fandom information from the text of pages that have a template with a "fandom=" field and then move "blabla - author" to "blabla" if it is unique and to "blabla (fandom zine)" if it is not via some sort of bot, with only a few complicated cases remaining for manual intervention. I mean, wouldn't have thought that a hard flow chart of directions to follow for a computer.