Now guys have actually solved the issue of surname precedence?

A few days ago, I saw a guy say that the problem of who the child should take the surname from is very easy to solve, no need to argue.
He proposed a plan: whoever earns more takes the surname, both go to work, each manages their own money, and on the day the child is born, see whose bank card balance is higher that year, and take that person's surname. Fair, just, and transparent.
He said this way, girls wouldn't have to complain about the hardship of childbirth and having to take the father's surname, whoever has the ability, takes the surname.
He also said that if a girl disagrees with this plan, it proves she doesn't truly believe in fairness itself.
Later, his wife gave birth to a boy, and he looked at the balance and said, "Let's go with my surname."
The nurse said, "If you don't come in now, your dad will be making a PPT about surname precedence in the corridor."
He was stunned and said, "My dad isn't gone already? Why is he still outside smoking?"
His mother peeked out from the door of the delivery room and said, "Just now, when you two were choosing the surname, he came out. He hasn't finished smoking yet. He said he wants to be the grandfather."
He didn't speak, flipped the blank birth certificate over and placed it on the glass of the incubator, drew a little person on the back—left hand held by the mother, right hand empty—reserved for him to fill in the surname himself later.