I think this is very subjective, but I'm going to give it a shot. People are usually either artistic/creative or booksmart. Of course there are people that ex

I think this is very subjective, but I'm going to give it a shot. People are usually either artistic/creative or booksmart. Of course there are people that excels at both, but not in the general public. So I would assume it's because most "hackers" are booksmart and not as much artistic/creative. You're not actually asking the right question, because it's not just about design and creativity. A great article: https://www.healthline.com/health/left-brain-vs-right-brain https://www.healthline.com/health/left-brain-vs-right-brain