“Still” isn’t the right word. Once Polaroid stopped making the film, closed their factories, and sold or junked their machines, their supplies did the same, and so some of the components stopped being manufactured and available for purchase. What’s sold now as Polaroid film was a reinvention of the same idea. And it’s notably not as good. The dwindling stock of unused true Polaroid film is getting absurdly expensive as a result.

The one factory you refer to was the last one, and was purchased by the Impossible Project (now Polaroid BV). So they were able to save one set of machines. But the actual process of making the film was lost. So it’s an old set of machines making a new but similar product.