But in case it helps: not all nudity is pornographic, and not all non-nudity is non-pornographic.
It's referencing an image created with pornographic intent. This is not that difficult, come on.
Modern relativists feign ignorance regarding the cost of what was almost universally regarded as societally harmful. It’s literally regressive behavior making decisions purely on the basest chemical responses and emotion and not higher order thinking, reasoning or logic. And then somehow bundling that up and claiming to be enlightened.
It is a nude, pornographic image that has been cropped. Cropping doesn't change the original intent.