I think if she had done that in a concert where an audience wanted to hear what she had to say in the monologue, she could have pulled it off. The monologue had depth and framed the lyrics of the song. But the VMA audience of stupid Bieber girls squealed every time she took a breath and drowned out what she was saying. That was performance art in the wrong venue. It fell apart, IMHO.
I am not a big fan of that song either, but I get she was trying to make a statement.