I wrote this intending it to be directly sharable and/or to provide a framework for how to have that discussion, kind of like a nohello.net or dontasktoask.com.
I've found success having sidebar conversations with the colleague (e.g., not in the main public thread where they pasted slop), explaining why it was disruptive and suggesting how they might alter their behavior. It may also be useful to see if you can propose or contribute to a broader policy on appropriate AI use/contribution with AI, and leverage that policy as the conversation justification?