Fitzgerald disliked Duff Twysden and I must say from her photographs, I don’t get it, either.
I have to say, though, I have problems with Fitzgerald, who I believe was the consummate puke-rich-boy-leftist-looking-down-his-nose-at-the-middle-class-little-people.
Of course, Hemingway was into “socialist realism”. See the end of For Whom The Bell Tolls.