I don't doubt that they have improved a lot this year, but the same claims were being made last year as well. And the year before that. I still haven't seen anything that proves to me that people are truly that much more productive. They certainly _feel_ more productive, though.
Hell, the GP spent more than $50,000 this year on API calls alone and the results are... what again? Where is the innovation? Where are the tools that wouldn't have been possible to build pre-ChatGPT?
I'm constantly reminded of the Feynman quote: "The first principle is that you must not fool yourself, and you are the easiest person to fool."