Some of the crop circles also embody truly novel geometrical concepts. This looks like a new artistic movement, at least. Maybe a look at an entirely different culture, which knows no boundaries between the analytic and the esthetic.
But cannot get the crap right. The Arecibo answer you had been banging on about earlier has mistakes in it.
Not sure how you find art as another shoe horn for ET, because we do art too. It is not more likely someone crossed space to do what we can.