The recipe is not hard.
Spend time with people who think they are the best in the world because of some personal or family merit/inheritance. Agree with them a little bit, and the seed is planted. Mingle with them and copy the way they do life, and your thinking gets altered.
The giant seed of entitlement shoots roots and the new plant grows.
Nothing to worry about. It’s just the scary face of a monster. Of a blind monster.