> Why would there be a human in this imagined system at all?

in the imagined system above it requires physical acts that an llm can not do, if we go further than the above imagined system and make robots to perform these task for the llm a human still is needed for maintenance for these robots and their assembly, once there are robots for maintaining the llm assistant robots, humans are still needed to maintain the maintenance robots and so on and so forth. I dont see an end point where a robot machine system is fully self healing without atleast a few humans in the mix to correct when there is a breakage in the chain

The ownership will want humans to punish, humans to trust, humans to manipulate, and humans that can be fired. They'll want a human physically present, representing them as oversight over the AI (a job the capital doesn't want to be doing 24/7). There are serious legal matters involved in high functioning AI systems (and that will dramatically increase over the coming decade), the capital will be extremely worried about liability issues. Human scapegoats are ideal. For now capital will want human style consequence-feedback systems for a tier of human oversight over the AI. It'll probably take a full generation before the capital controlling humans forget / give up on the old systems fully.

It's also worth noting that it's far easier at present to press a human into doing something highly illegal than it is to get Claude or GPT to do so.