I’m not aware of any very high performing organization that doesn’t have some form of cycling out low performers. And places that don’t do this, or promote based on silly metrics like years of service, consistently are places plagued with poor standards and performance overall.
High performing individuals also loathe the underperformers and want them gone. They drag down standards, create more work for others, impact morale. I’ve seen too many orgs that don’t chase out poorly performing people. What happens? The good performers flee.