Mine is generally useful for acting with care and grace towards other people, which is how I want to act as much as possible. I don't know if that's Proper Behavior, a term I feel like you should be willing to define if you're going to use.
And mostly unrelated but I explicitly reject the label of high functioning for myself, and the model that groups autistic people into high and low functioning. I can't exist in the contemporary world and meet my obligations without my supports. Autism is fully disabling for me without accommodations that I am by no means guaranteed. In this I have more in common with your "low functioning" autists than I do with most people in this forum, and I don't accept this language that distances me from them.