People with high socioeconomic status work much more and have less free time. It’s absurd to claim otherwise.
EDIT: please before being outraged at my comment have a look at actual evidence, e.g. Time and income poverty by Tania Burchardt; bottom decile compared with top decile has 12 hours more free time a week!
People with 2 minimum wage jobs have even less time.
> People with high socioeconomic status work much more and have less free time
I think you are misrepresenting (or perhaps, misunderstanding) the conclusion of these studies. The increased "free time" is most entirely due to high unemployment at the lower end of income.
If you control for unemployment and under-employment, the graphs pretty much flatten out (as you can observe in the later graphs of the publication you linked below)
Citation needed.
Edit: it’s absolutely not true universally and it’s ridiculous to suggest it is. Comparing averages will be very tricky as well.
Your point is even more graphically illustrated if you compare the extremes... Say trust fund babies to homeless people. The trust fund people spend at least ten hours a week reviewing investment and disciplining their entourage, whereas homeless people's time is completely their own.