Well, in some ways I can see his logic. We don't take off our shoes when we go into school or a business. but in many homes it is the rule. We don't walk into offices and just fling ourselves down, grab the remote and yell for someone to go get us whatever, but many difficult children do at home. He gets computer at school but not at home.
There are many differences between home and school, and some aspies figure that if you have a couple of different rules in different places then ALL the rules are different from one place to the next.
I am not sure your difficult child truly believes this, but maybe wishes it was true and wants to see what would happen if he tried living by that rule. My father taught me that it was NOT ok to curse in front of adults or near adults, but outside with the kids it was a choice I had to make. If he heard me curse or another adult did, I got into trouble. If he heard that I cursed around just other kids then I had to work that out for myself. I can see an aspie taking something like that and trying to stretch it to justify a lot of things, but they KNOW they are justifying.
Have you ever just refused to entertain difficult child's justifications? It was something we learned from the psychiatric hospital. difficult child knew the rules and when they were broken he always had a "reason". So we would then argue. Instead we would just tell him he was justifying and that the punishment was X for the broken rule and Y for the justifying and Y would increase if he continued justifying. So if he got 10 mins of a chore for justifying, he would get 10 more mins added on for each time he didn't stop. Following us or not leaving the room when we told him to was another increase or consequence. It made a HUGE difference in his behavior. The arguing was reduced drastically (HUGELY) and so was teh chaos in the house AND he didn't break nearly as many rules as long as we followed through.
It is HARD to do this if you cannot follow through with the consequence, or if you and your spouse are not on the same page.
just remember that it takes 2 to argue - and it puts the control for the emotional tenor of the family in difficult child's control, which is what he wants. It is another way to control his world, by getting you upset/frustrated. He also gets you thinking about that and not about whatever consequence he is suppsoed to do after the discussion because you are busy being upset and giving new consequences.