IME, most users of the term “AI slop” use it for all (identified) uses of AI because they believe that use of AI is itself inherently an indication of poor taste and low effort that invalidates the work independently of what quality the work would have viewed independently of the mode of creation.

There are definitely people who accept AI use generally who try to make “AI slop” a distinction within the universe of AI creation rather than a label for the entire universe of AI creation, but that seems to be a minority use of the term.