I suppose that _could_ happen, but I don't see it as very likely. Maintainers are absolutely free to decline low-quality patches or ignore with contributors who expect an unreasonable amount of hand-holding. This is completely independent of whether the code was generated by an LLM or human.
I have seen maintainers who, after a few rounds of code review on a PR that's not making any progress, close the PR and say, "I appreciate your efforts but this is taking up too much time. Please address the remaining issues independently and submit a new PR once you believe you have addressed them all."
The other possibility is that the LLM-generated patch is actually fine. If it looks okay and passes the automated tests, then I can't see why it shouldn't be merged. (Assuming Debian doesn't or hasn't enacted a blanket-ban on LLM-generated code.)
I have seen maintainers who, after a few rounds of code review on a PR that's not making any progress, close the PR and say, "I appreciate your efforts but this is taking up too much time. Please address the remaining issues independently and submit a new PR once you believe you have addressed them all."
The other possibility is that the LLM-generated patch is actually fine. If it looks okay and passes the automated tests, then I can't see why it shouldn't be merged. (Assuming Debian doesn't or hasn't enacted a blanket-ban on LLM-generated code.)