They are just trying to bring up that she do not deserve to get into the final group because all of her "popular" coming from her brother.
Whether it is true or not. It doesn't matter. It is a survival show with vote. Popularity > Talent and I'm not even saying that she is not talented. It just that there is so many people said she is not the most talented contestant and don't deserve to make it in. Those people really need to wake up from reality.