A Whitehall source says, "William is in on it."
How is that proof of anything but the PR machine using William's popularity to make it look like something might happen?
Same with Starmer. He didn't back call for further scrutiny at all. What he said was that it was important the Crown Estate was scrutinised. He didn't say it needed any more scrutiny.
Let's be realistic, last Friday it was deemed enough for Andrew to say he would no longer use certain titles.
Neither parliament, the government or anyone in the RF seems particularly in on anything if that what they deem acceptable.