I suspect it's just not something you find particularly interesting. Personally, I think other people's reaction will be the fascinating part. I could easily see a segment of the population being incensed at the notion of someone flying a US flag resembling a flag of surrender. (Note: I'm in Dallas, Texas at the moment, so I expect slightly stronger responses.)

Art's always legit to somebody, but even if this is just a goofy prank, it could take on a life of its own after, sorta post-factor legitimizing it. At the least, it could be a neat catalyst for a few flame wars.