I watched the first three minutes of the video.
He's not saying the Mary of the Bible is the queen of hell.
He's saying the false Mary that Roman Catholicism has conjured up is the queen of hell.
Kind of like when we denounce false versions of Jesus.
When we say the Jesus of Mormonism is demonic, we're not saying the real Jesus is demonic.
The fella in this video is doing the same thing with the Roman Catholic Mary.
That's what I got from watching the first few minutes.