I agree with the last paragraph from the Guardian article in above post:
Diana's ascendancy coincided with celebrity-watching spreading from downmarket magazines and tabloids to the broadsheets and the chattering classes and her progress was a bellwether of that passage. Wronged wife, feminist symbol, fashion plate, media manipulator, ingénue, sexual predator, champion of the oppressed and needy, loose cannon, charity worker, humanitarian, hysteric, bulimic, iconic Good Mother, alternative therapy flake, challenger to the establishment – Diana was all that and more. She was a one-off, fascinating and flawed. Her legacy might be mixed, but it's not insubstantial. Her life was brief, but she left her mark.
Yes, she left her mark that will continue through her sons.
BTW, the palace wants Catherine to watch films on Diana, Princess of Wales to emulate Diana's star power.