It's ok to dislike a public figure. Remember Blogsnark used to have a thread for discussion of the Royal Family but it was removed due to accusations of being racist. Criticism of a black person does not automatically translate into racism.

Meghan Markle having a miscarriage is no more remarkable than any other woman having one. They may be painful and traumatic but it's not more painful and traumatic for her. I personally find celebrity grief whoring to be really gross. There's no imperative to share it with the world, and much like when Chrissy Teigen did it, it has a tinge of "I'm going to generously allow the hoi polloi to read about this so they know special people like me aren't spared."