El Chisme

That's fair. But art still falls into politically useful, politically useless, and politically harmful categories. I'm going to prefer the useful and I'm going to tell people to make more of the useful and less of the useless, while actively trying to prevent the harmful.

With that said. I'm not going to say something useless but entirely unrelated to politics should stop. Just that people making political art could do so in a different and more useful way.

L'art pour l'art arose out of 19th century France when the French bourgeoisie finally controlled the entirety of French society. Art being done for its own sake or being done as a form of self expression arose out of capitalist society. This was 100% not true in feudal society where artists weren't expected to even credit themselves. Various socialist art movements like socialist realism also eschews l'art pour l'art for its literal bourgeois origins.

The idea of some dirt-poor artist channeling their mental illness to produce sublime art is just some stereotype that arose out of capitalist society.