I like to mention this to people who would accept the official narrative without questions. I had believed the official story for 9 years until this curious passport incident lead me to the rabbit hole.
I don't claim that the passport is a proof of the inside job, or that it matters more than other things. There are much more serious hints at foul play than that.
However, what I like about the passport story is that when you apply 'Occam's razor' principle to it, planted evidence seems more probable than the chances of passport getting through the pocket/luggage-airplane-building-explosion-landing on a sidewalk unscathed.
Also you might find interesting, what happened after 9/11 with the officer who 'found' this passport (whom it was given by an anonymous passerby).