In the case of @mike 's photo with dust in the sky, I think the dust adds something really interesting. Probably because Iām used to looking at perfect photos, I just assumed that the dust was intentional and actually part of the scene.
Expensive digital cameras / audio recorders can produce very high levels of fidelity (in the sense of scientifically accurate reproduction) and we can use Photoshop / Pro Tools / whatever to remove any lingering imperfections. Definitely thereās a place for all that!
On the other hand, sometimes more grit, more dust and more distortion can be pleasing in a strange way.
I guess itās like if you make a mistake when playing a piece of music, it could either be damaging to your career, or jazz.