I saw that yesterday and had a look at the social media of that company. They weren't really making jokes about KH3, just some references to people preordering the game.
I am unfamiliar with how they work either, so I can't speak on if this actually means something. You have some companies like EB Games which have preorders open from the very announcement, but others like Game where they are opened at a random point.
There really isn't anything to gain from believing in it though. We'll find out if it means anything come February 10th.