Itna halat nahi kharab there are multiple reasons which make them behave like a weirdo... but they are not killers or anti Punjabi or nay thing...
First thing is large impact of two sects of islam live there and usually have clash with each other, the area is saturated by madrassas and you will see young boys of age 5 to 18years with "topi" and running like chickens every where....
The find it appealing when the see fancy bikes loaded like a truck and people with head cams.. I remember @rocketscience was welcome with a water bottle thrown at him.. and I was hooted along when ever I crossed any hoard of madrassa students and the did not threw stone aiming at me but would through stone to bike wheels or in front of it while shouting at each other in a language not known to me...
you can find details of our bad experience here when we wrote about it..
https://www.pakwheels.com/forums/motorcycle-travel-diaries/265544-crash-course-visit-deosai-rama
I heard about there bad welcome before from other travelers but when I experienced it my self then offcourse I will recommend totally to travel from chillas valley swiftly and in day light.
BTW # chillas KKH hotels line up is very good you may find good night stay there... but the waiters were very arrogant and we were not impressed by the food they had.