Splasher: street art avenger?

I know the splasher thing is played out but when I saw this today I thought of my comments when I first saw the hand painted Dewars ads going up on this block in particular - specifically that street artists would surely not stand for such a flagrant example of bought-and-paid-for public space on a block so dedicated to public art in public space. Anyway, it turns out the artists never defaced the ad, but the splasher did. Go figure.