Once you have enough money to fulfill your basic needs, time is currency.
Money can buy people to clean for you, do errands and paperwork for you, and more. Free time is the most precious resource.
...and kids consume an incredible amount of it, and crucially far more of it than they used to.
Sure; GP specifically said they didn’t know another way to say it in a way that didn’t have strong connotations with money for readers.
I tried to provide one.