I've worked as a UX designer, and I think the mindset required to solve UX problems is just different to that required to solve engineering problems. For examp

I've worked as a UX designer, and I think the mindset required to solve UX problems is just different to that required to solve engineering problems. For example: The engineering needed to have the user select, crop, adjust, and upload a photo is not easy. But getting that functional is just half the challenge. Knowing how to make the UX be easy is another domain of thinking. That's why we have different people doing different jobs.