A return to Keynes?? Hell we are way way beyond Keynes to a fellow named Marx, and not Groucho!
Keynes is a sort of midway "happy place" for liberal inner children, along the road to straight-up Stalinism, no chaser. It's a reminder of the halcyon days before reality parachuted into the party, in the form of the Vietnamese War and LBJ's "guns AND butter" orgy which caused stagflation.