Mailer idolized Hemingway, at a time when Hemingway was a literary and celebrity giant. In Advertisements for Myself, Mailer suggested that Hemingway be elected President, because then we would have a real man in charge. ("President Eisenhower was a bit of a woman.")
So he became a 5'3" imitation of Papa, except that he couldn't box, and couldn't write very well (The Executioner's song was O.K.)
Mailer has a shock value publicity approach. It's sad when anyone takes him seriously, as in the Abbot case.