For example, almost all music listened to today is recorded, not live. It was the opposite way around 100+ years ago. Almost all portraits are photographs, not paintings, etc. The common practical uses of those skills are gone and they're relegated to small niches, luxury services, and personal pleasure.

I think they mean audio recording/reproduction, automobiles, and cameras have replaced much of what musicians, horses, and painters used to do. Similarly, AI will replace much of the thinking and problem solving done by programmers.