Miley is slinging shit here. She's not being empowering of women which is unfortunate because she has an opportunity to, and she misses it.

Miley is trying to capitalize on a common argument/discussion about sex, violence, and American media, which is that it's ridiculous that women's breasts, nipples and empowered sexuality are considered so taboo they are not allowed on TV, cause the MPAA to jack up movie ratings (i.e., rate movies as R or NC-17) and in general are prudishly censored and discouraged. Meanwhile these same censorship agencies are totally fine with extremely graphic displays of violence. The dichotomy is something worth commenting on, for instance see this article here.

While Miley is actually referencing a valid phenomenon her execution fails, not only because she doesn't explain/give more context to her statement, but also because instead of building up women as a whole, or even just commenting that she thinks female sexuality is a positive thing, she chose to throw shade at T. Swift when she said, "That's supposed to be a good example?" This is a classic example of "You think I'm bad? Well what about THEM?" also known as "if someone else did something worse you can't be that mad at me!" It's misdirection: instead of trying to get us to realize women should be able to express themselves freely and sexuality is not something to be ashamed of, Miley tries to take the negative critique that people have aimed at her, and say "Well really, you should aim here instead." By saying "I don't get the violence revenge thing" Miley is trying to say that she is better than such emotions, that those feelings are beneath her, which is another misstep because so many people, men and women, understand those feelings and have felt them - though, one hopes most of them have been mature and able to realize that while you may feel that way, you shouldn't execute on it. Miley should recognize that when T. Swift expresses her rage via music, it's actually a healthy way to channel the feelings. A music video of "Bad Blood" would be a safe space in which T. Swift could work out the emotions thru, essentially, rolepaying, without actually doing anyone any harm, and making 'art' or at least entertainment, a positive thing, at the same time.

I think this is what you are sensing with Miley's comments, but without a lot of awareness of some background context, it may have been hard for you to pin down.

also like. it's just stupid to throw shade at t. swift. that woman is like...the meryl streep (lvls of dedication and hard work; also, amount of class) of the music industry.