Code-generation velocity, and the absolute number of lines churned are 2 metrics AI tools can irrefutably benchmaxx, so the vendors highlight them.
On the positive side, they've decided to come down from "superintelligence", "superchanging workflows" and other bullshit to the actual feature - 3x speed of text generation. Which is not quite the problem that needed to be solved in software engineering, but as you said yourself...