I've know people that have done 100 hour weeks, and they were a mess. Only did it a couple of times before they stopped.
Sounds like someone wants to create a mythical story about themselves. Also, from the article. Step 3 just oozes "I'm dominante and I'm the boss, but I will throw you a bone. I mean, c'mon, this stuff just sounds made up:
"Step 3. Grant employees one must-have freedom. When Mayer suspects an employee might burn out, she asks them to find their rhythm. They've come back with, "I need to be home for Tuesday night dinners," or "I need to be on time for my daughter's soccer games." She grants those needs — no exceptions. "You can't have everything you want," Mayer cautions. "But you can have the things that really matter to you. That empowers you to work really hard for a long period of time on something that you're passionate about."