I also like his sense of humor, as evidenced by this bit where he's discussing some specific works of spec fic:
'In "Houston, Houston, Do You Read," the solution proposed by James Tiptree, Jr., [Alice Sheldon] was to eliminate the conflict by eliminating males. As a male, I do have a few problems with that particular approach.'
He also mentions Sheri S. Tepper's The Gate to Women's Country, a book that I found chilling because it seemed to suggest equality between the sexes was impossible. In that world, men either treated women like crap, or women treated men like lab animals.
So, this entry makes two points. You don't have to be female to be a feminist, and speculative fiction allows writers to explore all the possibilities.