Technically true, though I think a lot of low-effort/beginner art actually wouldn’t be bad enough to qualify as slop. Artistically more like oatmeal. I would say slop doesn’t even have a punchline, it’s just pointless for viewers.

Human-made slop probably is something produced en-masse to exploit some sort of system to make money, like the whole Elsagate thing (disturbing brainrot content on youtube kids).