Judgement has nothing to do with my experience.

It can also be true if someone experienced extreme precocious puberty from unknown causes, is highly gifted and a voracious learner/autodidact, is emotionally intelligent, went through some shit in life, and basically had to become the "adult" (became authentically internally-stronger and didn't fall apart) of the family and of siblings when their birth parents were irresponsible and infantile. Improbable? Sure. It happened. Keep judging, impugning, and denigrating from afar.

Have a good day and a productive life. :)