Blaming women for men not maturing is shortsighted and harmful. Men can learn to take care of their own emotional needs as women have for centuries - IN ADDITION to being the crutch for men.
I disagree 1,000% with your conclusion. Men need to learn to lean on their parents, their peers, and therapy - not women. It's a burden we are DONE carrying.
It has never been and will never be our responsibility to make sure men are maturing properly. And as we have seen - the dependence on women never goes away. So it's simply a cop out to never do their own growing.