Comment by nimih

> ArXiv doesn't even check the submission closely, so how can they know?

They can be informed by people who read the papers and check the citations. A zero-tolerance policy provides an incentive to report sloppy papers (namely, that you can be confident something will be done about it), and each time a paper is removed or an author is banned, it incrementally increases the value of the arXiv as a whole.

> Being required to publish in a peer reviewed journal will close off arxiv for many researchers for good.

At the end of the day, demanding that people carefully proofread their LLM-generated papers before sharing them on the arXiv seems like a relative low bar to clear, and I sort of question whether it's reasonable to call individuals who find it too onerous "researchers" in the first place.