This is a very irrational and stupid stand point. This psychiatrist may have studied and described a new type of mental illness. Why would you want to censor such study and prevent this scientist to do any psychiatrist work ?

For what reason ? Because the phenomenon is referred to as demonic posession and you don't BELIEVE in that ? First there is no way to prove that demonic posession doesn't exist, so your judgment is based on a pure belief. Second we must make a clear separation between the facts and their interpretation. Your reaction is obviously motivated by the reject of the interpretation. There are a priori many other possible interpretations of the facts. No one could have tested the validity of the interpretation because the existence and properties of demons is still UNKNOWN and this means there is no way we can test if anything could be a daemon manifestation or is not a daemon manifestation.

What you request is censoring and by that you prone obscurantism. That is anti-scientific and it would be a regression.

In face of such report or data, the only valid attitude should be to first verify as much as possible the reality of facts. we should leave on the side the interpretation of the facts in this step to avoid falling in a confirmation bias.

My feeling is that referring to these facts as demonic posession was a strategic mistake of the author. But that, in itself, can't justify to ban this person of any psychiatric activity.

To conclude I would say that scientific rationality and objectivity is apparently is a poor state.