If I understand well the comment, I have the same feeling that the math of the article are wrong.
For exemple, it says that you spare money by doing the things and that this money will buy you time later.
But if you still work, and do not pay someone to do your chores, you will have to do them in week end and free time. So you lose free time now for potential free time later.
Also, it does not make any sense to compare fixed personal costs like groceries and co with the difference in costs between what you earn with your work compared to paying someone half of your salary.
For exemple, it says that you spare money by doing the things and that this money will buy you time later.
But if you still work, and do not pay someone to do your chores, you will have to do them in week end and free time. So you lose free time now for potential free time later.
Also, it does not make any sense to compare fixed personal costs like groceries and co with the difference in costs between what you earn with your work compared to paying someone half of your salary.