Performance reviews are bullshit. Being a "low performer" at Meta might mean you are not a suck-up, or that you have a sense of ethics.
Performance reviews aren't bullshit - it's crucial to have an objective (as objective as possible) system for measuring performance both to reward your high performers and to understand your low performers whether to provide support or to document reasons for firing them. Several kinds of performance management system such as mandatory percentages for each rating level ARE bullshit, but without performance management…
But performance reviews are still bullshit. You could replace them with 'vote off the island' style votes every quarter instead and we wouldn't be any worse off.