“I have witnessed this kind of exorcism...”
I have to ask: is it as frightening as one imagines? I personally think that I would be scared to death!
It depends.
There are varying degrees of demonic oppression.
Outright possession is rare.
Frightening? No. Tiring? Yes.
Suffice it to say, the Holy Spirit, indwelling the believer is infinitely more powerful than our defeated enemy.