Like attracts like. Kate’s upper middle class (by US standards) manners, college background, and Sloane styling attracted a fandom composed of entrepreneurial middle class women who care about charity, rule-following and artsy stuff and politely freak out when someone gets a title or a jewel identification wrong.
Meghan’s Hollywood background, victim complex and tabloid histrionics attracted volatile personalities with inferiority complexes who cheer her rule-breaking and are deeply invested in having their neuroses validated through the kind of social media fauxtivism that involved ganging up on people because they are “problematic.”
I love her fans. They are vicious piranhas who are going to tear Harry apart when the divorce comes and I cannot wait.