Probably, yeah. Kate was a "commoner" [kinda], but her parents knew how to network to the right people to give her upper class training. Sadly, Markle is not quite the same.
Surprisingly, I was rooting for her at first until she started acting up. Even if you aren't naturally brought up in Euro-aristocracy, anyone can learn. You can't just undo literal centuries of foreign tradition and culture because 'Murica.