People here will widely accept that “parasites” exist who feed on unhappiness etc., while stating that demons are like Santa with horns and a naughty side.
In fact it’s possible the original concept of reducing ancient gods like Wadjet, who is almost certainly the demonic Duke Buné, to “demon” status and then specifying they ONBLY be called for things which are, on the bigger-picture, likely to create loosh, is about desecrating the protectors of humanity and the world (including animals) and forcing them to only feed on that kind of stuff, whilst denying them any positive love and worship, of the kind that they received before, in a kind of mentoring & protective role.
Like, if I took someone’s kind old granny, and beat and tormented her for ages so she lost all sense of selfhood (desecration of ancient temples, destruction of books and names), meanwhile the only food she could get was live kittens or something, it wouldn’t take long for even the kindest of humans to break and become “evil” and begin enjoying cruelty, especially if being cruel was the only food they got.
I don;t think all demons we know of were ancient and benevolent gods etc., but a few seem to be, and it’s possible that more were nature spirits, and other beings who were not innately “evil” (as in, rejoice in malevolence & suffering), they could have been nature spirits and so on (or “just some dude” who happens to exist and got trapped into this system).