it's like they don't want to acknowledge that out there behind the scenes there are women struggling to have their needs met in a relationship, their labour remunerated fairly, their share of the childcare not exploited.......................
Then you don't have kids with someone if you're not married. And if you do, you don't give up your FT job to enable the partner to carry on financially as if nothing has changed.
By having a child and being unmarried, then having another, quitting FT work to look after them, you make yourself the architect of your own financial insecurity.
Closing the stable door after the horse has bolted is pointless.
This guy doesn't want to marry the OP. So she gets a FT job and they share the care and costs or leaves.
It does make me angry to read about women in similar situations to you, who want to marry their partner (and father of their DC) but whose partner refuses. (I appreciate this may or may not be your own exact situation.)
Why? If one wants the financial security of marriage but chooses instead to have children whilst unmarried and packs in FT work to allow one party not to take a financial hit then that's their lookout. They're adults. They were perfectly able to ditch a person who wouldn't marry them if that was a dealbreaker.