LLMs as a body double for executive dysfunction is a great insight. I see chronic examples of corporate-sponsored executive dysfunction: striped calendars, constant pings and interruptions, emergency busywork, fire drills. It's likely that LLMs aren't creating productivity as much as they're removing starting inhibition and helping to maintain the thread through context switching. What's presented as a magical tool, which LLMs can be in the areas you mentioned, is also presented as a panacea for situations that simply don't promote good programming hygiene.