All music genres have a whiff of taxonomy prank to them, this is not exclusive to the guide. Sure, Ishkur tried to one-up "serious" music publications with e.g. Casiocore. But even there, life experience suggests that it must have independently co-evolved many times, so often that in this case it is even likely that some of those natural occurrences actually involved someone blurting out the name as well. They probably all forgot about it before sobering up though (if the gear is present, p(Casiocore) is approaching 1 with a rising number of drinks).