Taking the long view, what I think has happened is this:
We've solved one set of problems in that we treat our DC much, much better than we used to. We no longer make them work from the age when they can carry a bucket or a couple of logs. We're much more careful about their safety and well-being. We ensure they have access to as much education as they can stomach and we allow them to have a full 'childhood' - a very loooong, very protected childhood. We invest in them massively more than we used to and it pays off in terms of that young person's prospects in life.
All of this is obviously great and wonderful but the knock-on effects - for example, the huge demand for quality childcare and all the extra jobs of parenting that used to simply never exist - have never been properly addressed, they've just been dumped on women to sort out as best we can. So we all fret and worry and take digs at each other and feel guilty and/or defensive about our 'choices' as if it's all our responsibility while the men just carry on as they were. I don't think many men expend much thought on the whole SAH/WOH debate (I should say that there are always exceptions, before you all jump in to tell me about your own marvellously egalitarian relationships).
What really needs to happen IMO is for the whole work culture to be radically re-thunk. It's stupid that so many of us are working 50 hrs + while so many others of us are unemployed. It needs sharing out more which would give all of us more energy for the parenting lark. It also needs to be far more acceptable in the world of work to take time off for DC's illness, childcare emergencies, appointments etc. (actually, not just for DC but for aged parents, other relatives who need some care too) Men need to lead these changes. They should be demanding this as they are the ones with power at the moment (a good start would be for more of them to actually take their paternity leave). They should also be doing far more of their share of the domestic work when they are at home so that WOHM don't get such a shit deal.
But ... why should they when we'll all just muddle along somehow, pretending that all this extra work is trivial or somehow not real and blaming each other for all the difficult feelings our 'choices' bring up for us.