My impression is purely from a metrics perspective, people who were underperforming can really look like they are 3x as productive. AI is a real increase for them because it can do things they couldn't. It just gives them the ability to publish a thousand lines worth of PRs a day, which the regular and over performers have to review, but that shows up in THEIR metrics, not in the underperformer's metrics. If all you look at is metrics and KPIs and have no technical understanding, this looks amazing to you.

Most people I've worked with that were already some of the most productive before AI took off are still at the top, and AI didn't move the needle much for them. There's simply no way for them to do 3x the work.