The entire premise of this website is despicable. It's attempting to get people interested in coding by appealing to an entirely different interest. I think that the person is going to learn to code with or without the help of this website if they are interested in coding; and if they are not interested in coding, I don't believe this website will get them into it long term. I would argue that the only thing this website will accomplish is getting some people hooked on pornography who would otherwise not have gone down that path.
But even putting that aside, this seems like an inefficient way to learn anything regardless of the sexist nature of it. How would you focus on the coding aspect of it? Imagine trying to do a math lesson while I baked cookies right in front of you. It would be pretty difficult to focus on the math.