Exactly. I care about how a PhD astrophysicist thinks about data just as much I care how a biologist, psychologist, or sociologist researcher thinks about data.

That is, not so much.

At the PhD and research level the data types and questions are so specific that the analyses often are bespoke (in academia, the more bespoke the analysis, the more you can sell its novelty). PhD-level data analyses have very little relevance outside of its own field.

There is nothing profound to be had here, even if they have the prestigious title of "PhD astrophysicist".