This seems to be a current fashion. There is an article in the latest NYRB, reviewing Madrick's book.

Jeff Madrick, an economics journalist of some accomplishment and considerable intelligence, shares his views on what's wrong with economics in this engaging book. But methinks the gentleman doth protest too much.

Later in the article, on Say's Law

Madrick's second bad idea, Say's Law, can be treated more briefly, because it really is bad. However, it was mostly discarded more that seventy-five years ago...

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while it's not hard to find austerians among conservative government officials [Hollande?] and their advisers, both in the uS and Europe, and even among a few conservative economists, it is hard to find many among mainstream economists.

Conclusion (not stated) is that economists are irrelevant....