Read Anti-Intellectualism in America by Richard* Hofstadter; it's as true and relevant today, as it was back then. The decline, if any, probably has to do with the fact that there wasn't a Cold War where scientists could participate directly against a tangible threat and common purpose: “The Sputnik was more than a shock to American national vanity: it brought an immense amount of attention to bear on the consequence…
Part of the problem is that the American distrust of intellectualism is itself not the irrational thing that those sympathetic to intellectuals would like to think. Intellectuals killed by the millions in the 20th century, and it actually takes the sophisticated training of "education" to work yourself up into a state where you refuse to count that in the books. Intellectuals routinely declared things that aren't tru…
A characteristic and illustrative Aristotlean idea is the teaching that heavy objects fall faster than light ones. People for many centuries believed Aristotle about this, probably because it seemed sensible. But "sensible" just means according to the evidence provided to us by our senses. It also, in this case, means "wrong". Many people have "sensible" ideas about modern policy issues, such as the way that taxes generate revenue, or the efficacy of gun control laws. Most of these ideas, "sensible" or not, are also wrong, some demonstrably so, others a bit more subtly. But evidence is not terribly important to an Aristotelean, or to an intellectual.