From my experience as a software engineer, doubling my productivity hasn’t reduced my workload. My output per hour has gone up, but expectations and requirements have gone up just as fast. Software development is effectively endless work, and AI has mostly compressed timelines rather than reduced total demand.
It is not going to reduce your workload. It is going to remove one of your co-workers.
This - I can't think of any place I've ever worked where development ever outpaced backlog and tech debt.
The goal has always and will always be to complete as much as possible in the time allotted.
That’s the economy in general. Labor saving innovations increase productivity but do not usually reduce work very much, though they can shift it around pretty dramatically. There are game theoretic reasons for this, as well as phenomena like the hedonic treadmill.
There's a famous quote by a cyclist, "It never gets easier, you just go faster"