> It will be very hard (and only get harder) for humans to fight through the deluge of slop, especially if the slop is weaponized as a kind of DoS like in the book. I don't expect laws are strong enough to hold this back but I don't know any other tool in our collective toolboxes.

We don't need to fret about finding a technical solution to slop in the real world. Courts have a mechanism to fight this kind of thing (overwhelming the court/defendant) already: vexatious/frivolous litigant designations, sanctions, and anti-SLAPP-esque statutes.