The 'people should do what they want' comments fail to acknowledge that women's 'desire to work part time' and men's 'drive to have senior, high-paid roles' are a product of the unequal society we've grown up in, not inherent sex characteristics.
Take a bow! I can't believe so many find it difficult to grasp this!
Do you have scientific proof of this? How do you propose to address what you see as a problem but what many, many women very much see as their preferred option in their family lives?
I may be misunderstanding you here, but it sounds to me like an endorsement of the dangerous idea that feminism somehow means that women are free to have choices as long as they make the 'right' choices. Instead of being limited and restricted by men, it is the job of other women to take over and do exactly the same thing.
I'm reminded of the campaign that led to the banning of the grid girls. Yes, it was rather tacky, but I don't think any of the women doing the job were forced into it against their will. They were earning good money performing a role that they had freely chosen, which suited their own abilities and life choices. It's probably not an unreasonable assumption that many of them weren't ever going to be in line for highly academic careers. Now they've had their choice taken away from them - mainly because certain other women presumed to dictate to them that women should not be free to make their own career choices if those women don't approve of those choices.
Whatever the reasons behind it, the fact is that being a SAHP is far, far more attractive a proposition to women on the whole than it is to men. It's what they want to do. Plenty of women don't want that and a lot of men do, and that's absolutely great too. Everybody should have the same employment opportunities and pay, but also the same right to pursue a different life path if that's what they and their families prefer.
However, I don't see how it's in any way desirable for those women (and men) sincerely wanting to be SAHPs to be told that they have made the 'wrong' choices for their own lives and families and should instead pursue a complete different life path that they don't want, just to serve an ideology to which they don't necessarily subscribe.