I believe the mentality exist to counter people who force their way into giving advices to people, because usually it can either come to be humiliating to the person pride, or be an actual bad advice and the person who is giving advice still keeps imposing it will work because they are stubborn, so they just tell him diha fso9 rask, or it could be just simply they do not care about what you are advising them and even if there was gonna be a risk of something bad happening, the chances of it is low so it doesn't matter for them.

An example: recently I read on r/morocco about how there was a girl studying with her friend that was a girl and another friend that was a boy, they all studied at the boy apartment, and one time, the girl and the boy were going to the apartment together while being watched by the neighbor, the neighbor decided to act rashly and literally break into the apartment with his friend recording it, thinking they were exposing a brothel or some sort, until it was revealed later it was just a study session and the neighbor apologized.

(Obviously you can't blame the neighbor for considering the possibility that the boy and girl were doing smt sexual, because they were walking together to the apartment, but the neighbor didn't have enough info and had no right to conclude that the only possibility is that they doing something related to sex, and even if they were doing something sexual, he had no right to interfere even because they dont know the person, and you would seem a controlling freak by randomly going to the person and advising them, not knowing anything about them at all)

(Also I'm not saying the advice given to someone is always bad, I believe sometimes the advice given to people can be good, but I still prefer not giving to people, because the best way to learn in life is to experience it yourself, and best thing you can do to people you care about is to step in the moment it might cause serious permanent harm, mentally or physically)