What is Reddit's opinion of Meaningful Differences in the Everyday Experience of Young American Children?

From 3.5 billion Reddit comments

so this answers both this and the question about genetics: parents with college degrees wind up speaking with larger vocabs to their kids than parents without college degrees (research on this starts with https://www.amazon.com/Meaningful-Differences-Everyday-Experience-American/dp/1557661979 and expands out). they basically get a huge developmental head start as a result.

existing genetic testing has had issues with reproducibility for candidate genes and at its best can't even account for 1% of "intelligence". so if all you're doing is standardized testing expecting to have it correlate with genetics, you're completely ignoring half the equation

It's not genetic diversity. Not by a long shot. It's happening too fast to be genetic diversity.

My person opinion is that it's just because we've beaten diseases, which means humans can grow larger because they can focus on growing instead of being sick, and the environment our children experience growing up is now so much richer that their brains grow better than before.

The two research items to support me is, The Flynn Effect and This book, which every person in Washinton should read.