In the end, you either concede control over 'details' and just trust the output or you spend the effort and validate results manually. Not saying either is bad.
Now we can work on our passion projects and everything will just be LLMs talking to LLMs.
By manual labor I specifically mean the kind where you have to mix precision with power, on the fly, in arbitrary terrain, where each task is effectively one-off. So not even making things - everything made at scale will be done in automated factories/workshops. Think constructing and maintaining those factories, in the "crawling down tight pipes with scewdriver in your teeth" sense.
And that's only mid-term; robotics may be lagging behind AI now, but it will eventually catch up.
However with an LLM I'm not so sure. So how will you write a test to validate this is done but also guarantee it doesn't add the email to a blacklist? A whitelist? A list of admin emails? Or the tens of other things you can do with an email within your system?