No, they fired several people of both sexes. She got the biggest, hardest boot, but she was certainly the most culplable. She "produced" this lame story, the others failed in editorial duties. Rather gets the gaff for defending this ridiculous forgery long after is was obviously undefendable.
Correct me if I'm wrong, but I believe Mapes was the only one fired. Three more (all men) were asked to resign, but were still working for CBS months later.
Fired - Mapes
Asked to resign - Betsy West, Josh Howard, Mary Murphy
Three of the four were women. Where was NOW when all this happened?