I love the idea, but thinking of it in action for one of the stated purposes, I'm struggling to get my head around it.
It talks about preventing the use of LLM based responses to sow discord in forums. I imagine this referring to the sort of general populace coercion such as the """"alleged"""" Russian propaganda that swung Brexit on sites like Reddit or Facebook. The scientists propose a DIV that's marked as not visible, such that it'd be parsed but not visible to human visitors. Surely any offensive coder will very, very quickly tell their scraper element to ignore invisible DIVs (or that which matches the background colour, or in such small lettering, or hidden behind an image, etc) and be wholly unaffected?