This is a real part of burnout--the realization that as employee #3422 you don't have much bargaining power. But I came to the opposite conclusion to the author's.
You either work to burnout levels or they'll just replace you with someone who will. I used to be a really cocky 20-something programmer, not afraid of getting fired or laid off--until it happened! Ending up about a month from insolvency gives you a realistic perspective on the power imbalance between you and your employer. Combine that with having a family to support, and you become much more willing to go into the "burnout zone" in order to keep the bills paid.