@Bigcoatlady what you said is very interesting, and thinking it over I remember a lad in my sixth form, who like Sunak was very good at maths and science. He had a low offer from a top university, but was in danger of not getting in as he just could not answer questions where a response in words was needed.
Those of us doing subjects like English were utterly bewildered by this as he was clearly incredibly intelligent, one day he had an outburst in the common room saying he would find it much easier if everyone could communicate in quadratic equations as that was precise and left no room for misunderstandings.
I think Sunak has a similar inability to communicate with people who don’t think the way he does, there is no nuance in his world view which is already narrowed by his privileged education and wealth. I would also think that like my maths loving fellow pupil he lacks imagination, which inhibits empathy as you can’t see things from other people’s point of view.
He sees himself as being right and defends his mistakes to the last ditch because all decisions are binary, right or wrong without nuance.