From what I hear, what they want is to ban the studios from exclusively using LLMs to do work that so far has been done by humans. In fact, some of the negotiation (friction) points are explicitly agreeing on minimums for numbers of writers in a room, writer-weeks-per-episode, and/or writer-per-episode when it comes to TV. Fascinating stuff... and their job is (going to be) heavily impacted by LLMs very fast.