I have a team member at work like you while me being the complete opposite. I am not sure I still understand them well enough to say whether they are just stupid or it’s me. But frankly at least once already there was a situation where they said that my explanation was too vague and I didn’t listen and then month later I re-read what I wrote and it was indeed vague now :)

So while I disagree a lot with your statement my experience told me that actually there’s a lot of truth to what you are saying.