This isn't intended as a personal slight on SAHM. No one said there's anything wrong with that. And of course people who unquestioningly revere this privileged institution will take any perceived slight against them as being 'nasty'. It isn't.
It's a legitimate criticism to recognize that a far lower bar is set for this family on standards of work and behaviour than practically anyone else. They are ooohed and aaahed and praised to the skies for things most of us see as all in the day's work. That's the basis on which I criticize her total lack of substance and lack of interaction with any form of meaningful work. I'm not body-shaming, or clothes-shaming, or making wild reaches about the motivation of she or her mother, or the circumstances by which she came to university, or whether she 'stalked' her husband or who in the family bullied who, or any of the rest of the utter pap being speculated about on this thread.
I'm challenging her complete lack of any kind of work ethic. You want to be a Duchess/Princess/whatever fantasy title you choose to call yourself, you don't get to be a 'stay at home'. You're being given unimaginable privilege in return for a very low bar of expectation, you're unelected and can't be removed by due democratic process from that position of privilege. The least a person can
do in these gilded circumstances is get up off your backside and do some meaningful work in exchange for it.
Kate hasn't. She's had years in which she could have at least tried to make some form of impact. Not only has she chosen not to, she hasn't even made any pretence of wanting to do so. And this isn't a matter of personal opinion. The engagement records, year in, year out, have her listed as the laziest Windsor bar none. Monarchists may tell whoppers, republicans might tell them too, but the court circular is a matter of public record. And it doesn't lie.