Why would anyone want to work with a piece of software called rape-me?
Ask the man who wrote it.
Ask the person who wrote it. Whether he was a man is irrelevant. Men are also raped. Any person's motivations for naming their software something offensive are personal and not representative of an entire gender.
There are childish assholes everywhere, and this guy seems to take a few Rubygems with names like "ass" (how sexist!) and claim that this is indicative of a general attitude of he-man woman-hating in the programming community. The entire thing is absolutely ridiculous.