But Mrs. Bezos mentions his use of all those thinking verbs he ascribes to Jeff. I was reminded yesterday of writing advice by Chuck Paluchink (thanks Reddit) to never use these "thought" verbs and instead to show. This is even more important for non-fiction.
Presumably Mr. Stone had evidence and reason to put Bezos's mind in a certain frame from circumstance, action, or interviews and if he did, he should have laid out that evidence to show us his probably mental state and not simply told us.