Studies have pretty consistently shown that women's standard of living and household income drop after divorce when compared to the man's.

Household income would always drop after a divorce....

so thats non sequitur. And even comparatively, this makes sense as men usually have higher pay..along with longer hours, more time in field, overtime, willingness to commute more, all make for higher pay and most of these are done slightly more from men. Some of these complaints made by MGTOW are not centered around income, but rather networth. Do you have any studies involving networth? I would be interested in reading.

State laws have been moving towards the assumption that joint custody is in the best interests of the child:

Which is better, especially given past situations. Moving towards something does not mean we are there obviously and you still have the issue of many state's getting funding from child support payments and the incentives that brings.

I am not sure how anything you posted contradicts anything from MGTOW. You feel it does. Could you explain?