[AstralStorm]

Again, you instead missed the main point of the article that you can replace painter in your sentences with any other creative profession (including even a physics professor or a joke like a wizard) it would be the same. Which makes the analogy terrible.

Heck, most of these adjectives would also fit other jobs.

Going into detailed comparisons Graham digs the hole deeper.

Engineering such as programming is subject also to constraints of purpose and logic.

Art is not even subject to having an audience, and limitations of material are almost completely chosen, not given. I mean, you choose to make a painting rather than say an art installation. You choose specific techniques, topic and media even in painting.

You cannot exactly choose an operating system or hardware for most programs, even the choice of language or runtime might be limited.

There is purposeless art. (The piece itself has no purpose, the act of creation might still have one.) There was never a purposeless computer program.