I know many people who I presume like you, let chaos and drama rule their lives.
Shit happens, it doesn't matter if you have a super-structured day or not. Your ability to handle it calmly and with confidence is what makes the difference in how balanced, productive and stress-free your life is.
If you simply regard this as the prototype for a typical day, and not a script that's intended to handle all possible atypical scenarios, then there is no problem for it. As to 4am - 6pm, it's not like he's working solid in that timeframe. He's got personal time (kids, gym, etc) worked in there as well.
All of that is beside the point, however, as this is the schedule that works for HIM. If it doesn't work for you (or if structured schedules in general do not work for you) then you are quite free to simply move along.
Shit happens, it doesn't matter if you have a super-structured day or not. Your ability to handle it calmly and with confidence is what makes the difference in how balanced, productive and stress-free your life is.