* The bags apparently aren't even vacuum-sealed (there's a "breathing hole")*

Wouldn't the content (at least the liquid part of it) leak through the hole?

But they don't pasteurize the bag's content, so it will spoil a lot faster than, say, juice you buy at a supermarket. They use their fancy QR code to make sure a bag hasn't expired, essentially providing an over-engineered solution to a problem they created in the first place.