I tried asking ChatGPT if Japanese high speed rail has level crossings and it correctly identified the line I used as my counterexample (Yamagata Shinkansen). I think GP is just plainly misinformed in a more boring way.
If you paste the comment it replies to into ChatGPT, it generates almost exact same answer as that comment. Also, "Finally, ..." and "it's not A, it's B" is a good tell.
If you paste the comment it replies to into ChatGPT, it generates almost exact same answer as that comment. Also, "Finally, ..." and "it's not A, it's B" is a good tell.