My experience with coding agents points into the other direction: It's mentally very taxing!
Usually, you have a lot of time to think on the side while coding on what to do next, strategize, etc. But if you work in small increments with an LLM agent, this time is reduced and you have to be ready for the next thing once one increment is done.
So I don't see this as an equalizer. Rather, those who can constantly push forward are getting much more than those who don't.
A lot of people are oblivious to Zipf distributions in effort and output, and if you ever catch on to it as a productive person, it really reframes ideas about fairness and policy and good or bad management.
It also means that you can recognize a good team, and when a bunch of high performers are pushing and supporting eachother and being held to account out in the open, amazing things happen that just make other workplaces look ridiculous.
My hope for AI is that instead of 20% of the humans doing 80% of the work, you end up with force multipliers, and a ramping up, so that more workplaces look like high function teams, making everything more fair and engaging and productive, but i suspect once people get better with AI, at least up to the point of AGI, is we're going to see the same distribution but 10x or 50x the productivity.