Brainwashed by someone/s or something into believing they are.
I sure hope so, it would be a sad day for them if they could not. However I bet they do it for a different reason(s) than your question was about.
Sometimes people see what they want to see, because it is themself that feel inferior. Many times I thought a person was a Royal because of how they stood, but turns out the person was a clerk, or a waitress. ;)
because in the real world they are...for example there are people that are way better at flipping burgers than me...or throwing a football
I don't eat any of that. and i hope flipping is a starter jog,because it must get boring and claustrophobic.
from my pov...... usually because their real life is so bad that they have to do some thing to make them self feel better or look better, if only in their own mind.
Everything is done for them and they never had to do it themselves
i always think each and every person around us are different in one way or other
Because they don't know that we are all equal.I have a saying."I am not my career,I am not my money,i am not my car,I am not my education,I am not my possessions,or my family ,or my friends/,or my home,or my body or my beliefs.I am consciousness.
Maybe they don't think that it just looks that way....
When one puts another down it is their way of trying to escape their own reality which that do not yet fully understand.