I think the problem is context switching. "I can work on three different tasks at once thanks to AI" seems really empowering, but in reality, it's impossible to focus deeply on one task if your thought process is constantly interrupted every few minutes.
Every time I find myself idling in front of a screen, I feel the need to find something else to do, a distraction to fill those 54s before the agent sends a notification that needs my attention. This isn't healthy, and it's not how the human brain works.
Long, uninterrupted sessions of deep concentration are what helped humans produce their best work so far.