However, the article also stated that the dealer dealt the same sequence of cards over and over again. Not sure how that would have happened unless they didn't shuffle between games or, instead, used a new deck each time (all of which were unshuffled).
I'm not an expert on how casinos operate, so maybe it is common practice to open a new deck of cards for each game.
Usually casinos only go part way through a deck, helps keep counters at bay since the second half of the deck is predictable by the first half. Depending on the game and the shoe (some shoes get loaded with one deck some with lots) it could 1 deck 1 game. Probably not with baccarat since there’s no strategy, probably closer to 1 deck 5 or 6 games, but then if the next deck runs the exact same pattern (again it’s a no strategy game, all games deal the exact same number of cards in the same order, easy to spot a pattern develop). And in casinos you never reshuffle, used cards are trash, they usually actually nick them in some way so they’re easily identifiable as used.