Outside of QEII steadfast dedication, what impressed me most from the RF was Diana touching and hugging an AIDS patient. I think this action from a beautiful, aristocratic and famous woman, did as much to help AIDS awareness than just about anything. After watching those videos I could really feel Diana was in the moment and genuinely cared about these individuals. Not perfect, but when she was on duty with people in need Diana was a warrior princess without ego. I just felt it and think others felt it too. That's why her death was so mourned.
The difference with the Sussex couple, especially Meghan, is that her social outreach lacks sincerity. And please, there is nothing racists in my views (I have to put that in because if you don't like MM you are automatically a racist "sigh"). I think the Duchess of Sussex is and was using anything she could, her facile interest in women's issues, her choice of marriage partners, her acting, her current royal title, her blatant promotion of the businesses of her friends, to promote HERSELF. It is her single-minded determination to promote HERSELF, not the people of England or the RF, that has alienated the Sussex duo from the firm. I don't think she'll ever change and I don't see how the RF can use her to promote their causes. If MM and Harry stay married, it'll be Harry solo at all royal affairs.