Yeah I'll agree it might trigger some emotional gut reaction thing in some people (especially older/conservative folks), but it's also just a descriptive noun. Michael Jackson was a pop star, Lebron is a basketball star, and Sasha Grey was a porn star

I don't consider the phrase "porn star" to be a slur in most contexts, and I still don't see this as slut shaming, unless there was something in the article that indicates otherwise