This keeps being my argument when people at work daydream about time and cost savings by offloading non-critical business functions to AI. I say, "Great, so it can produce 1000x more work than a person. But then what army of people are we planning to use to check those outputs?"
I'm super-impressed with the current crop of language models for their ability to so accurately simulate correctness, but their inability to understand what they don't know - because, in fact, they don't 'know' any of it in the sense that we do - makes them like very productive but completely untrustworthy employees. A junior dev who monopolizes his mentor's time through inconsistent performance is not a good hire.