Someone responded with a long post showing scenarios with each, looked superficially authoritative... but on closer inspection, the tax treatment was wrong, the numbers were wrong, and it was comparing a gain from stocks held for 20 years with ETFs held for 8 years. When someone pointed out that they'd written a page of bullshit, the poster replied that they'd asked ChatGPT, and then started going on about how it was the future.
It's totally baffling to me that people are willing to see a question that they don't know the answer to, and then post a bunch of machine-generated rubbish as a reply. This all feels terribly dangerous; whatever about on forums like this, where there's at least some scepticism, a lot of laypeople are treating the output from these things as if it is correct.