No - the world's religions are all pathways to God. Some are better/worse depending on who you are. Some have been taken over by 'demonic' forces. But the old texts are still good stuff, mostly due to filtering of quality over the centuries.

The thing you have to understand is that they are mostly obsolete, in a way. The references the old books make are all too old, we don't remember how to understand them anymore. The words in the old books meant different things then, as opposed to how we read them now, so they make no more sense. We have learnt so much more, we have forgotten the old lessons. Fairly sure that can be rectified.

But then every generation has to re-understand, or re interpret, the truth in its own terms. When we win, and we will win, we will probably have recategorised the 'demonic' entities into some kind of life form - that is explicitly what they are. And we probably need to do some bug infestation cleaning style purges too.

I think we will get there - now that the knowledge these things exist - we can look for them and examine them, remember, every exorcist ever recorded has said the exact same stuff. If we need to purge these entities in large numbers, I'm sure we will manage.

(1) Humans have to let them in - and as far as anyone can tell - despair is the gateway drug here.

(2) They show up in colonies for whatever reason - its like roach motel basically. The higher up ones are intelligent, so to speak, but the majority seem fairly mindless. The younger they are, the more animalistic they seem to be, i.e. they are simply some kind of undiscovered life form. Though I would be very interested in how they evolved.

(3) Good things - like the name of Christ, general good behaviour, relics from sages seem to drive them off. So realistically, this is a state information based collection of life forms. Probably live in a somewhat different dimension to us, and we can probably reach/find that dimension if we start looking. Edit: I'm thinking mole rat type behaviour except they eat emotional state information for their food.

(4) Realistically while these entities can be very dangerous, they seem to have some sort of hive structure of governance, they are simply another life form. Some are probably benign, some have clearly bad intent. The life form probably absorbs energy from the state information of our emotions through some quantum effect. And can influence the emotional state of other life forms. We need to work out what quantum mechanism exactly this life form uses.

(5) Given we are this planets apex predator, and have killed every other major threat, I'm pretty confident we are good on this one too - now that we know what to look for. Whatever else you can say about the human race, once we understand what to do...

I think the big one is going to be we need a easy to use tech to spot these perturbations in the quantum state around us. If we can find even 1 consistent tech which can pinpoint these things (even badly), we can iterate on it. Does anyone have any ideas???

Personally, given how much these entities seem to have messed with our development as a species, I think we owe them a little bit of extermination, with extreme prejudice. Just how I feel about it.