It might be but the book boils down to:
1. Save at least 10% (or 25%) of your income
2. Live frugally. No flashy cars, etc.
3. Choose friends doing similar
I.e how to retire with a million.
I guess given enough income and decent rates on savings, it's not so revolutionary but perhaps hard work.
It documents a lot of the habits that get "normal" people to millionaire status. Drive "normal" cars for 15 years instead of buying fancy cars every 3 years. Clip coupons and shop wisely (2 for 1s, sales, coupons, etc). Live below your means generally. Save.
Basically the opposite of the SV mantra which is raise a ton of money for a shot at the lottery, live in the nicest apartment you can find/afford, eat out at fancy restaurants most nights, drive a nice audi or bmw, etc.
So, it's been a while since I dipped into this book, but my recollection was that I read the summary and intro and thought "this sounds like an analysis which suffers significantly from survivorship bias." Did you find with a close read that was/wasn't a problem with the picture it presented?
(Not that I think that the advice I skimmed over was bad, certainly, I don't like to buy depreciating assets like cars on credit, and more people could likely benefit from budgeting investing conscientiously.)