Earlier quoted context omitted.
How so?
Well... how do you enforce meritocracy? A pride of lions is meritocratic, in the "might makes right" sense. What definition of "merit" are you ordering your population by?
Would you rather go to a doctor who's good at surgeries or one that's bad at surgeries? One that got into medical school because of affirmative action, or one that was discriminated against and still got in (e.g. Asian doctors in the US)? Would you rather go to a car mechanic that's amazing at juggling but bad at fixing cars, or one that's bad at juggling and good at fixing cars? See, the "definition of merit" just takes care of itself (driven by the self-interest of customers).