Has it occurred to you that just as it is difficult for you to adapt to the communication styles and thought patterns of allistic people, your manager experiences the same difficulty adapting to those of autistic people?
While I believe organizations and managers should try to accommodate neurodiversity and help all types of people be successful in the workplace, it's not unreasonable to expect you to expend some effort adapting as well.
In all your follow-up comments you seem to have some excuse or clarification for why you don't need to adjust your behavior and the problem is obviously that your manager isn't trying hard enough.
When your manager asks a casual question, he is not asking for a formal document describing pros, cons. He's looking for you to make a judgment call, express an opinion, or for you to say "hmmm, I might spend some time this week looking in to that."
Reacting to a two-sentence exchange by spending a week working on a doc is a communication anti-pattern.