You have to ask yourself why is the Devil Jinn mischevious.
Why does he cause harm? Understanding the true nature of what Evil is. Since The evil Jinn seek the nature of their father (Iblis) The original Devil.
Their nature in being mischevious varies. Some being:
1. Playing with the person iin their sleep.
2. Possession.
3. Playing on thoughts. (This is common).
4. Wanting you to be a practitioner of calling them. A magi, medium or Magician. The highest ranking of them are magicians where ultimately you end up in servitude to them.
5. To commit suicide/destroy yourself.
We can see alot of people are affected by the effects of the "jinni" whether in high or low positions. It's just the religious people and those on the "Truth" are more sensitive and aware of the games and effects.
Since the "Jinni" is hidden alot of the effects of the "jinni" is hidden. They can hide within supposed naturalistic symptoms such as Psychosis. (Although Psychosis onset is not fully known). Alot of psychosis in mental asylums can be attributed to the effects of the Jinni.
What is the "ultimate" goal of the Iblis
Chapter (27) sūrat l-naml (The Ants)
I found her and her people prostrating to the sun instead of Allah , and Satan has made their deeds pleasing to them and averted them from [His] way, so they are not guided,
Since various Pagan tribes worship Serpents, Idols and Men. The quranic verse above explains that the ultimate goal is to go against the Worship of God Alone and to repent from sins and following of the messengers. The jinni itself whilst reaching its fathers (Iblis) true nature.
Whilst the natural nature of Man is the worship of Gold Alone. Since all peoples throughout living memory sought God it's just the means varied.
The reality is that many ancient tribes, peoples worship all sorts or objects, animate, inanimate as Gods or gateways to God or share in a part of Gods power. We have to ask how for example shamanic tribes after their ecstatic drug fuelled rituals they settle on worshipping other than God as their way. Similarly the Witch is always a Pagan and so is the satanist.
Is Modern day technology culture borrowing aspects from the Devil?
- Halucinations are a common symptom of those who are possessed. The hallucinations are usually terrifying i heard also that the some famous horror writers were intoxicated during their "creative" process. Technology currently mimics via 3d augemented reality hallucinatic effects. The culture of "esoteric" hollywood is well known and undeniably. The symbols, religion and underlying philosophy is in principle satanic. Whether in its lustful content, playing with mans desires, symbols (of masonic/occult nature), names, or movies promoting concepts giving an alternative meaning to "What is God" and "who we are" (generally involving spaceships, super people and Aliens) and generally eveything occult.
During a psychosis experience many aspects of horror movies are played out. Now, we can say, is this man mimmicking the movies or movies mimmicking the devil. The dancing man has been experinced by people in one continent to another. The aspects of serpents and snakes has been around since beginning of time known via shamanic practictioners.
What can be said is people are promoting it unintentially (not always intentionally). This is the safest position to take. They are being inspired. Inspired by who or what.