I am very sorry about your sister.
But Harry and Meghan have made themselves public figures by doing an interview with Oprah, taking part in a multi-episode documentary about their public and private life, done a podcast, written a book, etc. They are not above criticism. And as PPs have said, they were happy enough to throw their own staff and families under the bus.
I have no idea what you mean by this:
Please stop the bullying before some crazy person takes what you say literally and this all ends badly. It only takes one person.
Nobody on this thread has wished them any physical harm. We are just interested to see the chickens coming home to roost.