Yes, it's an assumption.
An irrational assumption? No, not especially. In the absence of special information about you, it's rational enough to assume you are a typical commenter on this site. If they observe evidence of your exceptionality, a rational observer updates based on that information.
Hmm I see your point- but if what they did was called 'rational' then there has to be another word for the part where they made the mistake. The mistake was they came to so much of a conclusion about something that they acted on it. They were wrong. They caused negative utility. It negatively effected the world and also their understanding of it. What is that called?
If you want people to ask you stuff reply to this post with a comment to that effect.
More accurately, ask any participating LessWronger anything that is in the category of questions they indicate they would answer.
If you want to talk about this post you can reply to my comment below that says "Discussion of this post goes here.", or not.