Earliest Date I can Find for "Multiple is DID-only; all others are appropriating!"

Okay, the earliest citation I can personally find for the whole "'multiple' is a DID-only word and everyone else is appropriating" myth is August 7, 2014, from an ask I got on tumblr from someone going by not-your-fucking-pet.  The original messages appear to have long since been deleted, so I don't know if it came from a named user or an Anon.

So the myth is longer lived than I thought, but still brand spanking new.  And I think it was the first time I encountered it at all, since I seem kinda mystified in the answer, rather than, "GOD THIS AGAIN."

--Rogan