@Tfmonkey This of course is still just a tactic to shame men into "contributing more" to housework. This of course does not actually succeed because the women are once again looking for an excuse to moralizing why they will not have sex with their husbands. Make it "his fault," and she can dodge the question about why she is not doing what she is supposed to as a wife by having sex with her husband regularly.
Part 2
@Tfmonkey If a woman really wants sex, she will put aside any bullshit excuse. But when she doesn't, any bullshit excuse may be used. After all, many husband's are either working longer hours or doing outside housework such as lawn mowing. Do those contributions count? Generally not. Because it is not about fairness or truth, but just a distraction from the issue that the woman does not want to uphold her marriage vows.