It's undeniable that the CEO would realize the outcome for such employee churn. But is it really true that this is a desired outcome from said CEO, and is done for the benefit of the company?

Employee churn, esp. of the type that replaces long tenured employees with new ones, are often productivity destroying. Good employees that have in-depth knowledge and high capability is worth their weight in gold, and yet they are the most likely to be able to leave under such a churning condition. Losing those sorts of employees are a loss which may not show up in metrics in the short term, but surely it will affect how productive the company will be in the long term.

The money quote was literally that people who can't "disagree and commit" should leave the company.