It is not a direct correlation. I might write 80% of the lines of code in a week, then spend the next 6 months on the remaining 20%. If the AI was mostly helpfull in that first week, overall productivity gain would be very low.
Who spends 100% of their time actually typing code?
It’s probably closer to 10% than 100%, especially at big companies.
One thing I would love to see is reports of benefits from various tools coming with one’s typing ability in WPM. I’d also like to see that on posts where people express a preference for “a quick call” or stopping by your desk rather than posting what they want in chat. I have some hypotheses I’d like to test out.