The issue is that we consider passing peer review to be enough for something to be taken as truth when it should really be reproducibility/replicability. That, and the incentives currently driving academia are absolutely ridiculous. Paper mills are merely a symptom of academia's ills, not the cause of them.
`np.random.normal(0, 1)`. You too can generate infinite amount of normal distribution data to use for fake datasets, free of AI.
People are probably thinking data more complex than normal distributions (though I'm also not sure if GPT-4 is the best method for that)