You'd honestly be hard for us to find even 1% of the population gives any real f*** about the source of art. They pretty much only ever care about the actual final result and maybe at most a name attached to it because it's of value in some nebulous fashion. Not the reason why that value is there. Just that it has it.
Hell honestly, most art is utilitarian. You're entirely right on that. It's made to serve a purpose either for the artist themselves or for the person consuming it. Most communal forms of art are made as a way to do something more efficiently or as part of a ceremony to accomplish something.
Art for Art's sake is kind of an extreme rarity.