It is only "literally AI slop" if you widen the definition to include anything made using computers. That is not an honest take on what content made with AI is.

The original author chose those assets and that background, other people made those assets on the first place and had to take a ton of tiny creative choices that changed the final thing and help transmit ideas and feelings (of uncanniness, vulgarity, surrealism, whatever).

Anyone can tell the difference between one and the other.

Text to speech in the 2000s would be considered AI

The things we called AI back then weren't AI. The things we call AI now aren't AI either. The definition remains wide.