Disney Channel is changing our young viewers

So I noticed my mom has been letting my sister watch Disney channel for quite awhile and has developed some nasty attitude from some of the girls on the channel. She 7 yrs old and become more of a drama queen. She was never like this. She was always sweet, funny and kind. She had her own personally. It looks like she sync the personality of these diva girls on Disney Channel. What are your views on this or your experience? When my baby comes, I'm definitely not exposing her to Disney channel at a young age. It's become such a bad influence.