We get it that people will abuse Wikipedia and it must suck to cull all of the ephemera people submit (not the best word for it but the only one that comes to my mind).
But I think rules should allow for nuance.
Perhaps Wikipedia should have allowed a kind of sub-Wikipedia: a sort of parallel wikipedia that deals in topics more akin to Urban Dictionary entries. Sort it's entries to the bottom of the search results, serve up a light yellow background for sub-pedia pages to make it clear these are not conforming articles. But it seems to me like a generally bad idea to be a ruthless gatekeeper for the enthusiastic and motivated contributors out there.