Because this is a financial blog, I would say that this chapter is the only disappointing one so far.
The author positions fuck-you money as having one year of living expenses so that you can say "Fuck You" to your asshole boss and then storm out of the office never to come back to a dysfunctional workplace.
What a horribly bad idea. In this age of tech disruption, some knowledge workers may be unemployed much longer than a year and this idea might only work in a welfare state. Alternatively, you can get an Uber license.
A better solution is to accumulate enough fuck you money so that your dividend income is equivalent to the salary where future salary increases lead to diminishing returns in personal happiness. This translates to about $75,000 in annual income. As it turns out, investing a million dollars at a return of 7.5% ......