I have no comment on TMND, I try not to criticize someone's holy book. But I believe that your analysis of how to do a popular non-fiction book is correct. Make it overly simple, have a clear positive image, don't stray into subtleties.
These things fit self help, early retirement and foreign living books and blogs extremely well.
How about an ER book that said: be born with at least average+ mathematical abilities, work extremely hard, bypass most of the pleasures of high school and college life, get really good grades, go to medical school, work extremely hard at pretty low pay for another 10 or so years, and if you have chosen your specialty for income you will start making money hand over fist. You will likely have graying temples and a 16 year sleep deficit, but after paying some horrendous income taxes and perhaps getting a divorce under your belt you should start amassing some fair amount of money
Woo-hoo! Sign me up!
Ha
I would buy your book . That's exactly right.
Pretty much all these financial help/how to succeed books are basically just explorations of survivorship bias. You could survey the last 100 powerball winners and ask them what strategies they used to pick their numbers, investigate what attributes they have in common and I'm sure a "common theme would emerge."
I think there are really two equally important elements to financial independence:
1) The will to delay gratification (you can argue if it's learned or genetic, but it's hard to argue you gave that to yourself somehow).
2) Luck. Either you consistently do (1) for a long time or you have some kind of "lucky payout" (part of a successful company, rich relative, etc). Combined with avoiding the opposite (have a major financial disaster - medical, nasty divorce, etc).
I would argue that we have limited control over (1) and almost no control over (2).
Books like TMND, Built to Last, Good to Great, etc don't investigate people/companies that had similar attributes but also failed nor do they follow up on the success cases and see how they ended up over the years/decades that followed. I bet some of the millionaires next door were hit by random one time events that crushed them as well. This forum will also have a similar slant. If you got FIREd and then wiped out, you are less likely to post than if you didn't