It’s all data driven. All they care about is views and buzz around their product. Unlike traditional TV they have a direct feedback loop into who is watching what and when, how long they watch, which parts are skipped, retention rates per season, what their hit rate is for recommendations, and so on and so forth.
This informs how they produce shows, and is why the “two season curse” is a thing. Very few shows are safe. If it underperforms (or if the production team wants to unionise), it’s getting the axe. Conversely if the show is awful or started good/decent and is declining but brings in the views and subscribers, it’s going to live a long life at Netflix.
If they could monitor your gaze to plot where your eyes are looking per scene they would.