It depends what the person meant by ordinary, but if ordinary just generally refers to "off-the-shelf" or commodity SSDs, then we've been able to get equivalent or better performing NVMe SSDs for a long time, for a small fraction of the price. Within what you can get retail, I think you'd still want the higher end of it for comparable speeds and yields, but would still save A LOT doing so.
What year are you currently living in? A good 2TB Gen5 NVMe with W/R speed upto 7,000MB/s can be had for less than $200 during sales that happen multiple times a year. Go down 1 tier lower to 4,000-5,000MB/s and you can have one for just $120. Nobody puts SATA in premium laptops, hasn't been the case for quite the few years, you got brainwashed good by Apple.
