> a) that doesn't intrinsically mean it's slop

If it can quickly and easily be identified as LLM code then yes, it is intrinsically slop and of no value. The person who submitted it did not even value it enough to look at/clean it up. Why would anyone else care to look at it.

If it is LLM generated but then HAS BEEN cleaned up then you cant immediately see the LLM and it passes the check anyways.