"The secret is that my wife is no longer really retired, and in fact she started a business that is now big enough to FUND OUR ENTIRE FAMILY'S LIFESTYLE."
http://www.mrmoneymustache.com/2017/03/06/etsy-shop/
If not outright dishonest, it certainly gives the off appearance that you can't put any weight in the numbers he is throwing out.
I guess I'm one of those "retirement police" who hates seeing a huckster give bad advice while eschewing talking about the real increase in realized risk you take by retiring early and not considering it in your plan. As one of the previous comments stated: your budget is not static, investment returns are not guaranteed, life events and medical situations change drastically.
So when I see, "I made it so can you", I want to respond, "Come back to me when you are 90 and on your death bed and talk with me again." I've seen the cancer treatment bills and what they do to someone with 10x your "financial independent" worth.