"It’s so crystal clear that the men walked because they’re men and the women didn’t because they’re women that it’s bizarre that anyone’s pretending otherwise."
Totally. The fact it was just men (except Anne) walking in the procession is because of protocol and tradition. It's pure Victorian upper class funeral custom. Mid-C19th etiquette dictates that women of the gentry and aristocracy don't walk in funeral corteges. In the early Victorian period the women didn't even attend the funeral lest "being unable to restrain their emotions, they interrupt and destroy the solemnity of the ceremony with their sons, or even faint" as one 1870 book put it, and later in the C19th it still wasn't expected they attend, and if they did, they were to be seated in church before the coffin arrived, and they didn't go to the graveside. The Victorians felt the men could be relied upon to maintain the required stiff upper lip in public but the women wouldn't be equal to it and had to be protected and mourn in privacy.
Like other traditions with a similar history, it's choice today whether to follow them or reject them. None of us have any idea why the women in the Queen's family made the choices they did. Maybe those who didn't walk were happy that protocol gave them the greater privacy of the cars (maybe some of the men grieving their mum/mum-in-law/granny/auntie would have liked that choice too, who knows). Maybe it was the Queen's preference. Maybe they just didn't want to wear flats. Who knows.
But the traditional protocol that only male relatives walk in the funeral procession, is because they are men and because historically women weren't thought equal to it/were protected from it. Agree it's bizarre to pretend otherwise.
And the female spouses of the new King and Prince of Wales and the 9 year old second in line plus his 7 year old sister (but not other similar aged great-grandchildren) joining to walk behind the coffin in the Abbey, is about seniority and showing the people the succession is secure...it was a stare funeral, not a family's private farewell to granny, I doubt ivery much it was just about involving the children in saying goodbye, or coincidence that the two great-grandchildren involved were the second and third in line.