My understanding is doctors will reliably treat requests from autistic patients with more suspicion than they do neurotypical patients. Either because of how people on the spectrum often communicate or how they react to stress and discomfort. You're exactly correct that this kind of behavior is always unacceptable, but historically people have excused this unprofessional behavior because it's common to find autistic communication styles confusing. The reason to talk about it like this is because we should be past the era where people feel comfortable with medical professionals being ignorant about basic patterns in common behavioral communities.
I am not well versed on them either! I was thinking of things like people on the spectrum finding eye contact uncomfortable (as opposed to connecting), or perhaps a focus on sub-points of the conversation which others find difficult to follow? People who are on the spectrum can describe it better than I:
>The reason for this is that natural, honest and authentic autistic communication - like giving ample detail, avoiding eye contact, pausing before answering Qs and giving direct, literal answers - mirrors the style of communication neurotypical people tend to adopt when they lie.[1]
It sounds like hyperbole. I told a dentist I was allergic to ibuprofen and she prescribed it to me. Some doctors will never respect you and think they know better. Just avoid those that don't do nice things like listen to you but also not enablers thsr want a lot of money.