The fact that Madonna hasn't gone on the record and say "TV and music is trash..I don't allow my kids to watch it or listen to it" is proof of that. Madonna is smart enough NOT to say something like that to the press. Had she did she would have to explain her earlier hits, her music videos, that infamous pepsi commercial, the book Sex, her terrible movies and the list goes on. The critics would have a field day pointing out all the "trash" Madonna has put out in the last quarter century. She really would have egg on her face. Now if she was fed up and got out of the biz totally ( no more music, tours, TV appearances, no movies ) then she could get away with it, but I doubt she will quit the "biz" anytime soon.
I do wonder what her kids would be like say a decade or two from now when they are adults and are able to see their mother's work, if it is true that Madoona is hiding her work from her kids, like not allowing them to hear her old tunes like..well Like A Virgin for example.