So they sanded or ground down the inside. Hopfully with a new tool this time It's not sanitary because there are cevices, but it doesn't need to be. Just spend 10 seconds extra. only time will tell if they rust if not. And really a tiny bit of surface rust isn't the end of the world. I would not scrap them unless the time it take to scrub them with bar keepers friend once in a while is worth more than the pots