It does nothing of the sort. Saying that a man makes physical effort to earn money is in no way cancelled out by the fact that "women earn money too". It has nothing to do with what I am saying.
I'm not discussing deadbeat dads, so, of course, their existence is irrelevant here.
I haven't said anything about women staying at home, working, being a housewife, etc.. It literally has no relevance in this at all.
I could say the same about you completely disregarding the effects working for 18 years might have on a man.