First of all, a person's personality and talent are superior to his background. Because even if you have a good background, you have no good conduct, you can't be recognized by others, and you can't make a contribution without talent. Even if a person comes from an ordinary family, he can make contributions to society as long as he is talented. Therefore, we should appoint people on their merits, regardless of their background.
Secondly, the theory of birth will bury many talents. Since ancient times, how many outstanding talents were born in poverty? They are bent on studying just to display their talents. They just come from different noble families, and there is no difference in character and talent. Only one person can lead a group of talents, so that one party's affairs can be cured and one party's difficulties can be solved.
Moreover, Confucius himself was not born in a famous family, but achieved this status through his own efforts. Therefore, he has a deep understanding and put forward such a view, hoping that he can do his part for the society and give many talented people opportunities.
Therefore, Confucius' view of meritocracy also calls on the society not to bury talents because of their origins.