As somebody who hires quite a few people I can say with certainty that looking for passionate people does not mean what the author is interpreting it to be. Companies generally want people who take pride in their work, believe in aggressively working towards their goal, know how to overcome hurdles, do what it takes and so on. It does not mean that they have to put insane number of hours to do this. It just means that they know how to strike a balance i.e. when the situation demands they go above and beyond.