Dreams are based on what you see in real life. The human brain is merely a processor, it gets input from all of your sensors and organs and processes it and you get the feel/experience.
He must have seen lord of the ring or game of thrones or harry potter etc which contain cool "old man with stick" characters. Plus, stories of the Prophet which mention him carrying a stick. That stick is stored in badshahi masjid museum as well if I'm not wrong. Walls coming down, probably same or similar source, most likely movies (1408 ?), maybe even real life experience where this person may have seen construction work etc..
The storyline/main theme, similar to or based upon information already withheld in the brain, shaitaan, deception etc etc....nothing new here. Hunchback ? Another movie character most likely...These poor people just suffer a disorder and because of their miserable life are depressed and sad plus angry all the time. And then we put a religious twist on that and they're all evil and satanic. Life must suck for hunchbacks big time. Poor people. What did they ever do to become satanic in everyone's subconscious.
Then offcourse add the religious twist......left hand, right hand confusion ? lol....
Feeling hot ? most likely the A.C. tripped (or power outage), room temperature rose and that info came into your dream. That happens. When you sleep, the brain is working overtime to entertain you, even the smallest outside info gets translated into something significant in a dream. Such as noises, voices etc etc.
And yes, it takes several decades to become psycho beyond repair.