Here are some examples of dubious advice from experts: the Iraq war, regime changes throughout the middle east, interventionism in general, margarine instead of butter, fat is bad/sugar is good, antidepressants are harmless, medical doctors don't understand Bayes' rule, etc. etc. etc.

For the record, I'm not American, and not anti-intellectual.

Here's a better example of patronizing by experts from the current crisis: "The average person should not wear a mask. Not only it doesn't protect against the virus, but it actually may harm."

What they mean is: it may harm by giving a false sense of certainty. Clearly the average person is too stupid to understand the difference between perfect protection and "not quite perfect, but better than nothing" protection.