Women were by the end of WW2 heavily involved in the workforce due to the wartime economy.
Again the idea of a man as the sole breadwinner was dead by 1945. It lingered into the 60's, but by the 70's it was fully buried. 2 Income families also gave rise to huge standard of living increases (and inflation).
I don't think dual income parents are a bad thing, that is is required is a bad thing however.
But it's a Catch-22 in the inflation game, that if you end up with a high family income, that it's going to get nibbled at, and make single income families next to impossible.
That is a societal/parental issue - if we as an adult society set realistic bars for things, then everyone wouldn't be out trying to keep up (and their kids up) with the Jones's.
I think you are overly creative in the above - Western Values only recently allowed women to vote, and outlawed slavery...
So I think we need to agree that the definitions of freedom and dignity and who they relate to have been changing, and still are.
I think you started strong but end up jumping the shark -- Canada was always referred to as a mixed salad in terms of immigration and the lack of assimilation to a "Canadian" culture - it started with the French, when the English didn't extinguish the French Canadian culture. While down here, America has always prided itself as a Melting Pot where immigrants merge and become Americans with a slight flavor of their ancestors.
I would stipulate that Diversity, Inclusiveness, Equality is not a bad thing, as long as it is not done at the expense of other's rights.
I'd like to offer one point from a very small sample size of my immediate neighborhood. We have 6 homes in our little area, each sit on about 2 acres.
H1: Dual Income 2.5 kids (my eldest son lives in Calgary with his GF, and is from Training Wife, so I only counted him as .5
)
H2: Single Income 3 kids (mother was a teacher who now stays home with the children, and also takes care of Brothers kids -> H3)
H3: Dual Income 3 kids
H4: Dual Income 3 kids (Wife on maternity leave due to #3)
H5: Dual Income 5 kids (blended family 2+2 and 1 together)
H6: Dual Income 1 Child
Medium Family income is in the mid 6 figures.