Isn't it clear that Harry is only talking about this to address the argument that he is out of time? In other words, he is showing just what it was that prevented him from bringing the legal action before? In that context, of course the William settlement is relevant because it shows that he was under undue influence to dissuade him from continuing.
This has nothing to do with William's privacy.
The next unelected head of state of the UK entered into an agreement with the proprietor of newspapers that were effectively involved in criminal activities, and that settlement was not disclosed. Not only does it raise issues, if, for instance, William and his court have been leaking about other embers of the family to the Sun, it also suggests that William may not be a completely independent actor when it comes to his brother's press complaints. Same with the allegation that Charles did not want action to go ahead because he was more concerned about the reputation building of Camilla.
The conflicts of interest are so glaring I am astonished those castigating Harry cannot see them.
I keep saying that these people operate opaquely, with no transparency at all. I guess they really can't afford to be transparent.
Thank goodness for Harry. He is shining a light on the murky dealings between an unaccountable press and an unaccountable royal family.
Also, pay attention to what has been happening with Murdoch over in the US, where Fox has had to pay a settlement ion hundreds of millions in heat case against Dominion for dishonest and defamatory reporting.
Can't really believe that people here have no problem with Murdoch who has poisoned public discourse in three major western countries. Jacinda Arden once said the reason New Zealand is relatively free of the kind of divisive right wing politics of the US, UK and Australia is that Murdoch has not been allowed to spread his malign influence there.
Would be interested @Whaeanui to hear your assessment of that as a NewZealandress :)