It was really the opposite, having lived through it.
The last years of Diana's life she sold huge amounts of papers on negative press. People were happy to see her charity works, but really wanted to pick her apart, get the gossip and tut over her latest actions.
When she died that was when the Saint Diana began. Fuelled in part by Tony Blair who wanted to be seen as on the side of "the people" and not one for overlooking a good Popularity Prout moment. And partially, I suspect, from guilt from the people who poured over the negative press and wanted to persuade themselves that they hadn't encouraged the press by reading it.
But I suspect if Diana had put her head down, and just courted publicity for charity works, her death would not have been as much of a shock for people as she wouldn't have been so constantly in the news. Ironically she probably wouldn't have died either.
So I suppose you could say that her sons are splitting her publicity too: William only looks for it when he's doing something for charity. Harry wants his private life out there, as revenge, to show the RF how well he's doing.