They had problems selling it on gear.playstation.com, I had to contact like 3 support people and they eventually submitted a manual order directly to the warehouse (?). They said they had an order to remove certain items from the site but it hadn't gone through yet. They didn't specify which items, but I'm sure you can make a good guess.
Edit: The title is just a meme, but I did legitimately buy one of these just to have a memento of the biggest flop in gaming history.
There's no way any amount of hats they can sell would make a dent in a wasted 8 year long development that had like 700 players max. They're even removing the merch from the store, I'd imagine the bad PR of having these things around is worse than getting the money from selling them.