I'm not sure what to think... I uploaded a PyHPC workshop paper I wrote in 2011 and it said 27% machine.
I also uploaded my PhD dissertation from 2012 and got back 40% machine, which is just barely below the 42% threshold.
I don't publish anymore... but does this mean I wrote like a LLM or did LLMs learn from me? :p
Update: I also uploaded a IEEE CLUSTERS paper I wrote in 2015 and it came back 74% machine written :|