Graffiti in weird places

I've been noticing a trend of Graffiti in weird places. They aren't even trying to put it up on the wall at this point, they want to be clever and hide it, and when you look at it finally it is a gotcha moment. Most didn't see it, but you noticed it cause you are a weirdo looking at strange places when you poo, and they just want to let you know FU for doing that.

What are the longer term societal implications of this shift? It only seems to happen in otherwise clean and graffiti clean rooms, you gotta look hard for it, and most don't notice it. It's kinda like a legal contract, looks okay at first glance, but when you look real close you see those little clauses jump out, and then you don't feel so sure about signing that contract, or ever trusting that individual again. Is this evidence society is slowly turning into lawyers? Or are lawyers turning more and more to vandalism?