Longest cast list ive ever seen and what is the purpose of being UN-----

If she didn't want to be associated with the film, then why did she agree to be in it in the first place.

Yeah, I've never seen a cast list in the credits like this one. Every single extra in every scene of the movie was listed...

I think it has something to do with the union or SAG or something. She can work for less or free is she is uncredited. Like if she was doing it as a favor, that's the loophole they use.

As far as the extras getting credited goes, The Farrelly brothers routinely put family in friends in their movies. And they get to see their name on the screen (and it maybe gets them a SAG card). If you were a movie maker, wouldn't you do that with family and friends?