"There are 100 ways I can think of for stopping a car without having brake disks."
You miss the forest for the trees. The article is just mumbo-jumbo. The wheel itself is a much larger diameter metal structure, subject to much larger stresses. Since the wheel isn't a problem, seemingly, then the friction disc brake isn't either. Remember that the disc brake doesn't have to operate at 1000mph, and doesn't have to endure the high centrifugal forces while being hot. Operation at 160mph is peanuts. Why did they goof and go with carbon discs I don't know, but the brakes aren't an issue at all. If the wheel survives, a similarly constructed brake disc will, too. The entire reason for having a separate braking disc and not using the wheel itself is the wear. The wheel has much larger diameter than the brake disc, so any braking wear on its circumference would require wheel rebalancing. That's an expensive, time consuming operation, since the wheel has to be balanced better than a hard drive spindle is balanced.