So I don’t know if this answers your question, but there’s my two cents for you.
It does! This is precisely the kind of stuff that I’m interested in! I agree with you, in that it’s possible to think wrong thoughts even with a higher IQ. I see IQ as the speed of thought, and you can very quickly arrive at wrong conclusions. Similarly, if there’s a thought that your skill tree hasn’t unlocked, then you’re left with thoughts that are maybe not ideal for a particular situation, thoughts that could make someone “overcomplicate things unnecessarily” or “make dumb mistakes”, as your dad or anyone on planet Earth would.
I think it’s especially hard to isolate IQ when there are many thoughts or behaviors that we don’t typically associate with high IQ. “Ah yes, the violin is a sensible instrument for a learned man” or whatever people may think. That’s partly why I asked my question. If someone leads a life not typically associated with a high IQ and yet have a high enough IQ that manifested in their life, how did that look like? Of course, I’m not looking for wild stories. I’m looking for genuine stories, and I’m glad that I got an interesting answers like yours!
You seem to value honesty and accuracy. It sounds as if you’re saying that someone smart wouldn’t say they’re smart. It also sounds as if you’re saying that someone who wouldn’t be considered smart can correctly identify people who claim that they’re smart but in reality aren’t.