The vast majority of that increase looks to be caring for young children (under 6) and for physical needs [1]. Look at how little time is spent reading to kids or helping them with school. A lot of parents don't even know how to help their teens with math and science homework, unless they're highly educated in those subjects themselves.
This is not true, in fact, parents are spending 2x more time with their kids.
https://www.economist.com/graphic-detail/2017/11/27/parents-...