garmonbozia
Remember TGC is an Indie GAME producer, so the concept that Tarotists want the cards in an order just does not make sense to them since cards in a game are random.
Game decks typically come with all the cards in a particular order as well. Bicycle decks have a very particular order. I think this is just an eccentricity of TGC and their printing process.
It's like buying a used tarot deck online where the cards are all out of order. It's annoying to put all the cards in order to double check that they are all there, but it's a nice way to get a first glimpse of a new deck.
I can see how this would be a huge annoyance to deck designers who might bulk order decks and ship them to customers themselves (do many people do that?) --especially if they want to check decks before shipping them.