End of book Running Lean", the part "CloudFire: Pivot, Persevere, or Reset" got me confused

Anyone who read the book, got the same feeling? That, basically, following the Running Lean method brought the very author of the method to a situation where he built something viable but disconnected to what he was really excited about? That he, at the end, forced himself to found a problem to his solution that he was not very interested in at the end in which, the method itself had something to do about?