Also I can see you and I both agree that it's disingenuous to call all LLM generated content slop. I think slop has just become a provocative buzzword at this point.
Regarding drawing the line, at the end, it comes down to the person using the tools. What others think as these tools become more and more pervasive will become irrelevant. If you as a person outsourced your thinking than it's you who will suffer.
In all my comments, I personally never used the word slop for this project but maintained that LLMs were used significantly. I still think that. Your other comparison of LLMs with things like doxygen or translation tools is puzzling to me. Also points about hammering every nail and every comma are just strawman. 5-6 years ago from today people used these things and nobody had any issues. There's a reason why people dislike LLM use though. If you cannot understand why it frustrates people, then I don't know what to say.
Also people do write assembly by hand when it is required.