Everyone is entitled to their own opinion. As far as Judge Milian’s credentials are concerned you can find them on the webpage for the show. She is in fact a Judge and she served on the bench in Miami. I can’t comment on former Mayor Ed Koch who might have been hired for his political view points and entertainment value. Anything you want to know about the show can be found on the web page.
I imagine that Rabbi V can answer some questions as well, since he has a personal experience with the show.