GPT-4 and Copilot absolutly makes me more productive as a programmer, wiring all the tests, getting maybe 80% of them right and then I fix them up. I am not producing 10,000 lines of crud, but I AM producing 1000 lines of test-covered code, I'm doing the hard bits, and the AIs are doing the menial parts.
I am by far the most productive programmer on the team however you measure it (we have about 60 different metrics available to management) and a large part of this is be having enough energy to always be attacking the hard problems, because I am not wasting mind power and time writing the trivial bits that can be automated.
Does it get it right every time? Nope. Does it make hilariously wrong mistakes? Yep, about once or twice a day! Is it worth it? Absolutly.