Besides the detail that even Kalahari Bushmen have mobile phones now, primitive humans (or our ancestors) weren’t stupid. You could take a human from 1000 years ago and after they stop flipping out about computers and modern technology you’d be able to teach them to click a button in seconds to minutes (depending on how complex you make the task).
General AI can take actions on its own (unprompted) and it can learn, basically modifying its own code. If anyone ever comes up with a real AI we’d go towards the Singularity in no time (as the only limit would be processing power and the AI could then invest time into improving the hardware it runs on).
There are no “shackles” on ChatGPT, it’s literally an input output machine. A really damn good one, but nothing more than that. It can’t even send a POST request. Sure, you could sit a programmer down, parse the output, then do a request whenever ChatGPT mentions certain keywords with a payload. Of course that works, but then what? You have a dumb chatbot firing random requests and if you try to feed the result of those requests back in it’s going to get jumbled up with your text input you made beforehand. Every single action you want an LLM to take you’d have to manually program.