I’m guessing it’s his Dad.
My late maternal grandmother was of the Depression Generation. She worshipped FDR.
My mom is of the (early) sixties generation. She worshipped JFK but her mom clearly influenced her.
She firmly believes that anyone who’s made a lot of money in this life had to somehow take it from those less well off and that enlightened government can solve all the problems of the world.
Dunno what they taught Economics students at Columbia U. when Ben was going there, but it must have been Keynes all the way.
My parents came of age in the depression. They both hated FDR as did their parents.