If it is a scientific theory, then why would they want to dismiss it?
They dismiss it AS a scientific theory, as in IT AINT ONE.
Also even if it was a scientific theory (presupposing supernatural intervention is not science it is theology); it would be dismissed along with any other scientific theory that the evidence doesn't tend to support.
The evidence doesn't support it.
It isn't a scientific theory.
Scientists reject it for both reasons.