RSBBM
I don't know much at all about Sophie, but at least with respect to Camilla, you only have to look back to 1996 to remember that Camilla was persona non grata with most of the western world for continuing her affair with Charles while he was married to Diana, and ultimately breaking up that marriage. That's not dignity in my book. Staying power sure......like a cockroach.
It's taken a long time for the House of Windsor to rehabilitate Camilla's image, but they still struggle with it. Even "The Crown" on Netflix had to forego the infamous "tampax phone call" between her and Charles when both of them appeared quite UNdignified, so as not to drag her back to her skanky mistress image of the late 90s. Harry and William probably did the most to help with her image improval, but I'm guessing that was at HRH's and Charles's insistence.
Catherine was viewed as a party girl and a fluff piece for many years until she and William carried on long enough that she became "Waity Katie", just biding her time until William saw the light and proposed to her. As a 21st century woman, I don't find much dignity in that. Only when she bore the Royal family the children did her image truly begin to change. Being part of that antiquated form of sexism is nothing to be proud of or to emulate IMHO.
These highly public figures pay professionals to manage their images to make sure the public at large, and the UK taxpayers in particular, stay enthralled and footing the bill.