Took me a while understand. So, the same person has both submitted their research article to the conference, and also acted as a reviewer for articles submitted by other people.
And if they in their review work have agreed to a "no LLM use" policy, but got exposed using LLMs anyway, then their submitted research article is desk rejected. Theoretically, someone could have submitted a stellar research article, but because they didn't follow agreed policy when reviewing other people's work, then also their research contribution is not welcome.
(At first I understood that innocent author's articles would have been rejected just because they happened to go to a bad reviewer. But this is not the case.)
And if they in their review work have agreed to a "no LLM use" policy, but got exposed using LLMs anyway, then their submitted research article is desk rejected. Theoretically, someone could have submitted a stellar research article, but because they didn't follow agreed policy when reviewing other people's work, then also their research contribution is not welcome.
(At first I understood that innocent author's articles would have been rejected just because they happened to go to a bad reviewer. But this is not the case.)