Earlier quoted context omitted.
Sitting for extended periods of time is bad for one’s health. Also, being in a vehicle is the highest morbidity/mortality risk thing people do. More time on the road = more chance of injury.
Agreed. But it’s not grueling. Programming you also sit for long periods. Programming usually isn’t considered grueling.
Also, many/most taxi drivers have to regularly work evenings, nights, weekends, and holidays. (Also upping the risk due to sleepy or drunk drivers).