Given that IME most women's eyes immediately glaze over when the word "computer" is mentioned, I doubt that "our community isn’t great at encouraging women contributors" is the reason why few women are in computing.
The comic could have just as easily said "one girl is good at math therefore exactly as many girls as boys are good at math."
I think for the sake of civilization, we should not try to aim for a 50/50 ratio. Your utopia is another person's dystopia. Not all of us share your morality.
Education is the widely recognized source of power. Should we strive for 50/50 and if so, how should we achieve it?
Perhaps building applications and managing data will involve more visual tools that allow domain specific knowledge to be applied directly?