So if he had normalized to more education-specific measures, for example, the innovation decline he reports would have been even worse.
It is now well known that total population sizes, after immigration is factored out, are on the decline in every first world country irrespective of culture.
Furthermore, the second derivative of world population growth went negative for the planet in the 1970's (this was the inflection point in the S-curve for global population) and even for India and Africa in the 1990's.
Several independent estimates now project our total world population to hit a maximum circa 2050, followed by an accelerating decline thereafter, a time when even emerging nations will exhibit the "technological contraceptive" effect we now see in the first world, where non-immigrant birth rates (1.3, 1.5, 1.7 etc.
The 2003 ATUS  found that on an "average day," persons in the U. age 15 and over slept 8.6 hours, spent 5.1 hours doing leisure and sports activities, worked for 3.7 hours, spent 1.8 hours doing household activities, and divided the remaining 4.8 hours among a variety of other activities, including eating and drinking, attending school, and shopping.
I would expect that even the recent disruptions of globalization would be unlikely to significantly affect these numbers, and such disruptions always disproportionately affect the developing world.