At least Bridgerton is fiction. Mary Queen of Scots was a period piece.
Two of the major characters were also gay for which there is no historical record but I can accept what the screen writer posited about history erasing the possibility.
But the inclusion of black and asian characters reaches the point of diminishing returns... it's radical tokenism.
I would watch an all-black cast about an African period piece if it were a good show. I mean, I loved the Cosby Show, race was not relevant to a good show. Wings was an all-white sitcom, it was a terrible show. There's nothing inherently wrong with an all-white cast if it's a period piece. Apparently there were black nobility back in the day.
We really need to stop worrying about race so much. The Cosby Show wasn't racist, and neither was Cheers. It's just a show.
I liked Jerry's answer on this: