Earlier quoted context omitted.
It's a random number in front of physical measurement, unrelated to anything from reality. Just because all of the marketing departments choose to participate in this particular bs doesn't mean it's not pure marketing bs. That just means it's industry standard marketing bs.
No, it isn't random either but it hasn't been associated with a particular physical feature size since 1997. How Are Process Nodes Defined? https://www.extremetech.com/computing/296154-how-are-process...
Your source seems to disagree with you.
> The numbers that we use to signify each new node are just numbers that companies pick.