Yup, it's the short sentence cadence.

"And yet, hours before surgery, with death still in the room, I didn’t feel fear. I felt something quieter. Stranger. I felt connected. To her eyes. To my breath. To the weight of my feet against the floor. To the wind brushing the window."

The usage of these short sentences (which, people do use, but sparingly) is a good marker. My hunch is this is because of how they call attention to themselves and are rewarded by human RLHF participants. I don't know if incentives including spending time on essays like this but if they don't and the rater is trying to do a speed-read, these stand out.

Have written about other markers here: https://saigaddam.medium.com/it-isnt-just-x-it-s-y-54cb403d6...

One along those lines: "Not just that we think. But that we feel. That we can marvel. That we can sit in silence across from someone we love and feel time slow down and become something."