You seem to be assuming that he doesn't adapt to circumstances. I have a similarly constrained schedule, and yet when things come up I adapt to them. Having the schedule means that I don't have to adapt very often, and under normal circumstances I can concentrate on the job, and not on scheduling the job.

You're replying as if the man is an unthinking robot, enslaved by the schedule, but it's clear to me that he's not. He's simply automated what he can to free up time from scheduling, and to make sure important things are scheduled in properly as the norm.