Earlier quoted context omitted.
Actually in many cases it is for social KPI storytelling. I know some wealthy people and at gatherings they love to tell 5-10min long stories of exclusive processes that they followed to gain something exclusive while dropping names and numbers. The processes are easy to understand for the entire social circle (i.e. not technical or business achievements which they can't easily disclose).
So, hobbies. You're talking about hobbies.
They might pass the time doing those things, but not as a mere passtime or hobby, like if they were sewing or playing CoD. Unlike those, doing them and telling about doing them serves a specific social purpose.