I can't bring myself to be so judgemental. He once lost his temper in a restaurant, he left his wife (and maybe she was lovely, maybe she did something terrible), he wrote under an assumed name (and the point?). Which one triggered you? Is hardly a character assassination. His son from his first marriage was estranged, as if that is unique.
Do yourself a favour, if you like the arts, I seriously recommend not finding out what the artists are really like at home. I think you will find many are not the people they appear to be.