Sorry to hear that. I work for AWS, and I like to think we're pretty organized. I'm not sure what part of your experience was "unorganized". You probably caught the team on a busy day or something.
LPs are just guidelines for what the company "wants" out of its employees. They're used heavily in hiring to weed out small thinkers and bad culture fits, and a bit in performance reviews. Outside of that, nobody really cares about them. You get upper management worship anywhere. It's the same thing as obsessing over celebrities.
Judging corporate based on fulfillment center working conditions isn't fair. One is a $15k job, and the other is a $115k job.