As a Brit, I must try to put forward the other side of this saga.
Firstly, it is very easy to make sweeping claims without putting forward any evidence. Secondly, she confirms she has mental health problems , which, to put it kindly, could make her hyper-sensitive. A question about her baby's colour for example is clumsy, but not racist.. Her Royal-appointed mentor is a former (black) equerry to the Queen.
Thirdly, her claims about royal titles for her children. The rules governing this were laid down well over a hundred years ago when steps were taken to limit size of royal family. When Charles ascends the throne everyone 'steps up' and Harry's children will automatically qualify for a royal title should their parents so wish.
Finally royal protection: any member who steps down from royal duties no longer qualifies for protection. This is true for all have done so.
Please see both sides of the picture!