Can't disagree with anything here really. I think one of the problems is that some people in powerful positions in companies want to do long hours themselves,

Can't disagree with anything here really. I think one of the problems is that some people in powerful positions in companies want to do long hours themselves, so expect those under them to do the same. They see someone putting in long hours as hard-working and diligent, even though in reality they are probably being very inefficient and producing shoddy work.