Never trust an artist with the big, high-quality ubiquitous message of awesome revolution.

Big means it's bigger than him.  Either he's a mouthpiece or he's pulling power from some older cultural structure, and those are all co-opted.

High-quality requires large financial risk.  Considerable difficulty is encountered in getting a work to the point of being truly impressive.  This is very telling about the value of the wished-for effect!

Ubiquitous is a dead give-away.  For the mechanisms of ubiquity to be in place, many many powers and principalities must be placated, and convinced that the pith of the message is only advantageous to them.

What could be at once more and less ubiquitous than mainstream culture?

The wise counsel of the people closest to you.  Trust in that!