In no way does he ever objectify his girlfriend and you just project to no end. Where does he exclude "the idea of female programmers completely". Maybe in the same way that he excludes the idea of "dead rhinos", because it isn't the point. The point his, he is excited about his girlfriend wanting him to teach her about programming and wrote about it. Go rain on someone elses parade.
To your other point, there is nothing polite about insulting others with sexist labels. The 'polite criticism reminds people woman are people too' tirade... ending with the "and you all know that"/"some folks", is just priceless and telling passive aggressive form after preaching against the bad male sexist programmer that should watch his language.