I do agree that the most likely reason is that scientific papers tend to be highly formulaic and follow strict structures, so a LLM is be able to generate somet

I do agree that the most likely reason is that scientific papers tend to be highly formulaic and follow strict structures, so a LLM is be able to generate something much more alike to human writing than if it tries to generate narrative. But it's still fun to deduce that the reason is that the quality of technical writing has sunk so low, that is even below the standards for AI generated text.