How is it disingenuous?
I think there is a fundamental difference of opinion over what Mother's Day is.
You and lots of others seem to think: "He (husband) should be making an effort to appreciate his wife for all that she does for his children"
So I suppose, reading between the lines, you feel Mother's Day is about appreciation for the woman who gave birth to and cares for your children, rather than appreciation for your actual mother.
Whereas, I think it's a day for kids to show their mum how much they appreciate them and everything they have done for them.
Maybe women, especially those with younger children, feel like it's a day they should be prioritised by their husbands, which is fine if you're all on the same page, I suppose. I just think it's a bit mean that mum's can't have just ONE day a year.
A man's priority is his wife and child, of course. But I think Mother's Day should be about mum's being made of fuss of by their children. You don't just stop being a mum just because your children are grown up.
Do you not see your mums on Mother's Day?