Not with the consistency to achieve the results that he has. I'm sorry, if you think that a person that is 'dumb' can run these companies to the level that they're at I simply do not respect your opinion and do suggest you to do some introspection why you cannot cede that someone that has achieved what he has in a way that is consistent and replicable in a multivariable and complex domain such as business is a competent and intelligent person. Sure, there are other things you can detract and criticize him for, but this one seems like a weird one given the evidence.
By any standard that you would apply to gauge intelligence based on someone's accomplishments and actions, Kim Kardashian would qualify as highly intelligent. If you cannot cede that she has one of the greatest intelligences of our generation, possibly even of all time, then I simply do not respect your opinion and do suggest you do some introspection.
Funny enough, while I criticize the cultural impact she and her family have had on young girls as related to body image, I think there is evidence that they are intelligent as in having a capacity to process information. Nowhere near Musk, but you are not actually trying to have that discussion.