I believe the TL;DR is simply, live for your own goals and health first and then help others after, instead of trying to conform to some idea of a chivalrous person.

It isn't some strange P.U.A. take on the "friendzone" issue, either. I think a lot of people are turned away from the book because of its title and connotations. I think that was a clever move on the author's point, to be honest.

So from what I understand, it's more of a self-help/self-confidence book than anything.