I worked 50-100 per week for years and after 60 hours or so there is very little "life" left to be had, the time remaining is almost all dedicated to chores.
What do you want to bet that this guy has had a staff his whole life and never had to deal with laundry, cooking, shopping, cleaning, bills, or any of the other dozens of tasks necessary in an average person's week?
A billionaire's life consists of nothing but work and leisure with serfs to do everything else, so screw him and his condescending "work- life" lecture. He doesn't even know what that means.
