In that case, simply vote the submission down; that won't clutter the discussion for other forists who want to talk about the actual content. I think this is what the voting system is fundamentally for; we don't have to, and probably shouldn't, justify our votes aloud.
"This is slop." sounds like something that a fairly simple bot could paste in every thread, with slight verbal variations. Sorry, I don't see the genuine humanity there, and I doubt that any double-blind experiment could nowadays distinguish between 10-word drive-by comments written by humans vs. AI. That is nowhere enough material to analyze and tell apart.