10/10 explanation. I would add two things.
First, there is a massive amount of variation in “normal” people. I’m personally of the belief that we spend too much time classifying people and that can set unreasonable expectations. Just because someone was/wasn’t diagnosed as <x> does not mean they will neatly fit in that box.
Second, there are cultural norms and elements that interplay here. I am a New Englander living in the Midwest. I consider my communication style to be direct and frank, which means that I try to objectively say things as they are. I grew up being interacted with this way. This style of communication is somewhat contrary to the norms of the Midwest, which can result in people interpreting me as being confrontational and lacking empathy.
Better still, he invited the home owner and the arresting officer over:
From Wikipedia