As is her total silence, the disappearance and silence of her problematic husband, and the total silence and apparent lack of inquisitiveness of the British press in a woman who has not been seen for 6 weeks where the foreign press is reporting she has been in a coma. It is like there are ten alarms and flashing red lights going off about her but everyone is ignoring them because they have been distracted by an old man blowing bubbles in the corner.
There have been a lot more threads and discussion about Kate than Charles. Evidence in MN. However the discussion always attracts the infamous MN thread police who are so unhappy with their own lives that the only pleasure they can possibly get is to chastise strangers online for speculating about the health of RF family.
The entire PR has been pretty poorly handled from the start tbh. Kudos to Charles for using his health to raise awareness but it seems he was advised not to reveal the final diagnosis. The game of "something's very wrong but we won't tell you what is" is understandable from a personal perspective but never great from a PR perspective.
Presuming that Kate is obviously not in a coma, this would be an opportunity to offer some sign of convalescence to the public. This is the same woman who stood outside of a hospital right after giving birth in full makeup and heels. If she really wanted to, she could definitely manage to give the public a single gesture even if it's a personal message or image. W&K have always handled their PR very well, giving the press (and the people) peeks into their life and their kids. Everything seems to have gone off the rails this time.
Presumably the next PR move would be some pap shots of Harry arriving in London. That would keep the press interested for a while, to see how long he's staying and who he'll be visiting.