Leaving aside the fact that process size is a marketing term these days, I’m currently typing this on a previous-gen Macbook Air with a 10nm Intel CPU. They’re definitely not stuck on 14nm.
There's a reason the only laptops getting 10nm are low-quantity premium laptops.
There was a youtube video where the guy used a scanning electron microscope to compare gate sizes between 14nm intel and 7nm AMD and both were basically the exact same size.
The conclusion was that the term is useful only to compare a single companies product line against other offerings in that line (eg comparing Intel's 14nm to Intel's 20nm makes sense but comparing Intel to AMD based on node size is meaningless).