I think he is talking about "Keynesians", who use Keynes as theoretical cover for their statist/elitist policies.

For example, Keynes advocated that governments spend the money that they HAVE (saved from budget surpluses when the times are good) to help the economy recover from a recession - and it is not a bad idea, per se.

The problem is that the US government has never had a surplus in recent history (save for one year 20 years ago).

Hence money printing.