No he called a conference for that specific reason.
I understand people were talking about and her brother has an absolute right to talk about her as did other who actually knew her but he didnt at all.
Are you sure he called a conference to talk about Diana, because that sounds like a wild interpretation. As others have pointed out, he is not talking about Diana, but the way she died, and why that happened. If he did indeed call this conference purely to discuss this, then it's is very clear that he is discussing the press/paparazzi, and not Diana.