[Arcadian Empire]

The problem begins with marginalizing fathers from families.

The most masculine thing any man can do is be a good father to his daughters and sons.

[Alberta's Child]

I think you are largely correct, but I'd also suggest that there's a bigger influence that doesn't get a lot of attention: urbanization.

Take the average male from New York City or San Francisco and compare him to the average male from West Virginia or Kentucky. The difference is so stark that you'd almost think they were different species entirely.