Arthur Miller’s callous behavior reminds me of how another leftist icon, John Lennon abandoned his son by his first wife. He never visited him or gave him any of his money. The boy lived in poverty in a modest neighborhood where all the kids at his school thought he must have been rich because his father was John Lennon.
I read a few Beatles biographies. John Lennon was a real thug in his younger days. He once kicked a guy in the head with a steel toed boot and the guy recovered (somewhat), but later died. His whole embrace of “peace and love” was just a bad act, IMHO. His bad karma eventually caught up with him.