I can eat, keep the lights on, and have enough left over to not worry for a little bit. Otherwise I can starve on someone else’s principles.

There’s nothing morally wrong with being in a bad movie. Even if you meant artistic integrity (which is what I really assume) there has always been a lot of bad art (music, movies, plays, paintings, books, whatever) produced. There’s no shortage of people who want to be a part of that for reasons ranging from surviving to having a good time.

If you don’t like something, don’t watch it, read it, listen to it, or look at it. Don’t accuse others of not having integrity just because you can’t fathom why they do what they do.