do you ever consider the fact that maybe you and him having aspergers is resulting in you both being so stubborn and him being ungrateful?
parents should understand how their son/daughter became who they were and become who they are right now and they should be accepting for that. parents should understand that you are lovely and great just the way you are and what you always were and they will have the will to protect you and your personality. giving them a book of how to live a life is not very accepting. being autistic is being special and different, not bad and a must-change.
everyone here is different, including OP. they shouldn't be judged regardless of who it is, parents don't always give spot-on advices and sometimes they do just as much mistakes as anyone else would do. that is part of a human being. i am not implying that what they did is a mistake but it's not a very wise action to just hold back on your honesty and just give them a book just because they think their son doesn't understand what they will say to him.
what tokthree was trying to say was that autistic people are, well, special and different, and i mean so is everyone else. trying to be passive-aggressive to your son by giving someone of how to live a life normally is not wise at all. that's someone telling you to be different.
if i told you that you can't stop shaking your leg harmlessly, like a soft shake, nothing annoying, and you do it, and someone tells you that's something you must change or stop doing the action, what would you say?