My first reaction was "uh oh, hypermeritocracy" i.e. children drilled for test-taking success from the earliest age - so of course more children would dilute th

My first reaction was "uh oh, hypermeritocracy" i.e. children drilled for test-taking success from the earliest age - so of course more children would dilute the tiger parent effect. But that was based on just a quick skim. Not an issue when I was a kid; parents drilling kids academically didn't even go as far as mine checking whether we did our homework. All four of us turned out OK by the standards of "finish university and have an appropriate (to the level of education) career".