

To be fair, the industry spent decades measuring a distance, so when they started doing features that had equivalent effects, the easiest way for people to understand was to say something akin to equivalent size.
Of course, then we have things like Intel releasing their "10 nm* process, then after TSMC’s 7nm process was doing well and Intel fab hit some bumps, they declared their 10 to be more like a 7 after all… it’s firmly all marketing number…
Problem being no one is suggesting a more objective measure.
As I said. It’s an extrapolation of the rules from once upon a time to a totally different approach. It’s marketing and increasingly subjective. Any number can “make sense” in that context. The number isn’t based on anything you could actually measure for a long time now, it’s already a fiction, so it can go wherever.