Steiner said that people who do not develop themselves enough morally and spiritually will become elementals in the next stage of earth evolution.
Our present earth evolution comes fomr an ancient cosmos of wisdom and beauty. So fallen elementals are intelligent but can be very ugly.
in the same way, the mission of our present earht evolution is to develop Love and Freedom. So the ex-humans who will have failed this goal will turn into elementals beings gifted with morality, but acting immorally, in PARASITICAL NEED OF LOVE. Needing love and needing to be loved. It will be the first time elementals will be gifted with morality.
Some elementals, mostly of the salamander kind, Fire beings (undine=water, gnome=earth, elves=air). Fire beings look very much human, sometimes with wings. some fire beings are from the animal realm. animal group-soul are from this level.
when humans crossthe threshold of death, sometimes they are very much fragmented in their inner being, so these frasgmented pieces of Self are torn apart and go their own way: they become fire beings and exist among animals group-soul and other elementals. the elementals who ordinate nature and plants are mostly healthbringers. But the elementals who co-exists in the astral world of man and animals are retarded and they do not belong to the inner space of evolved beings like animals and humans. They have a regressive influence on this astral world. Bottom line, elementals who live in the inner world of animals and humans are dangerous, and parasitical. When they have an action on plants, they cause poisonous plants (toxic, or psychoactive...) to come to existence.
What i wanted to point out here is: elementals who have become parasitically in NEED of us will eventually disappear because they cannot evolve spiritually this way, by feeding parasitically upon other forms of life, they do not develop the Spirit. However, this sort of elementals will disappear, yet another type of elemental will come to existence: ex-humans who will have lost their soul-spirit and become parasites in need of LOVE.
So when I listen the Song 'Just Can't Get Enough', I wonder if Dave Gahan talks about drugs or his significant other. But anyway, it points to this dreadful future when most humans will have failed their spiritual mission and regress to the stage of parasitic elemental beings.
Steiner talks about their activity in a 'time travel' fashion: parasitic immoral elemental ex-humans of the future are acting RIGHT NOW in the minds of people in HIGH PLACES, inspiring materialism, nationalism, psychopacy, and tyranny, inaugurating a dreadful hell/prisonplanet on earth. This feeds them retroactively. In a downward spiral vortex/loop.