Genuinely, sincerely appreciate the civility with which we are able to have this discussion. Obviously we do not agree on this, and that is okay, but I think it is worth pointing out how much I appreciate the thoughtfulness which you put into this response.
For the record, I've never disparaged the intelligence of people like George W. Bush or Amy Coney-Barrett. In fact, I think that Coney-Barrett is extremely intelligent, and I think that Bush was/is intelligent as well- I think that a lot of people mistakenly allowed his folksiness to color their perspective of his intelligence. This may surprise you, but I even think that JD Vance is extremely intelligent.
However, I do absolutely think that Donald Trump is legitimately a person of significantly below-average intelligence- and that is an opinion that has ben widely shared by the people who educated him and were educated alongside him at UPenn's Wharton. Trump has a widely-documented aversion to reading and a well-documented inability to grasp and process complex information; to me, it is very telltale that multiple members of his former cabinet- including, and especially people like his Chief of Staff and the Chairman of the Joint Chiefs, said that he is, and I quote, a "fucking moron."
I've never taken an IQ test myself, so I have no idea what mine is, but in general I consider myself to be of very, very average intelligence, and honestly in comparison to most of the rest of the regulars on this board, I'm probably below-average in intelligence- perhaps significantly so. So perhaps my perspective on intelligence isn't the best, but I imagine that Kamala Harris would run circles around me intellectually- and I think that she would run circles around the majority of people in the right wing media ecosystem who are calling her "low IQ", "DEI hire", etc.
Just my opinion, of course, and I know it's not one that you are likely to agree with. And that's ok!