This isn't new. Processors are often the same template for multiple models and manufacturers "bin" based on quality and just turn off the bad parts. This is why it's more expensive to produce a nicer processor: the yield rates are much lower. There is still significant variation in models, though, known as silicon lottery. This is why some chips overclock or undervolt much better than others. There's even one site that sells chips that basically go through extra binning to ensure a better product: https://siliconlottery.com/