Agreed. While I wish them luck, I think they're accepting a bunch of terribly flawed premises, about the willingness and ability of women to do the "startup thing".
Maybe that's not what the author of the article wants to do (and I'll be honest, it's not really my thing either; I live a very comfortable life on the East Coast), but I think she overgeneralizes a bit, extending her experience out to general truths about women in general. There's no reason why women shouldn't be equally represented among coders. There's no reason why women shouldn't be as eager to get their hands dirty in a startup when they're in their 20s. There's no reason why women ought to feel that they need to take a disproportionate role in parenting, or even feel pressured to have kids at all, if they don't want to.
There's definitely room for trying to make starting a business easier, for women and men who aren't in their 20s and don't want to move to Silicon Valley. But we should also be trying to figure out where the 20-something women coder/entrepreneurs are, or how we can create more of them.
It's not as though entrepreneurship or staying up all night coding on pizza and Mountain Dew are something where men have a biological advantage; there's no good reason why women shouldn't be equally represented. That they are not is symptomatic of a deep problem in both the tech industry and in the educational system that feeds the industry. Stopgaps are fine, but we need to be looking into the deeper problems at the same time, not just accepting them on premise.