The email reads like a tantrum, mostly because of one unneeded paragraph. The employee should be fired but the CEO sending a company wide email blast that boils down to "Quit or we'll find you and fire you" is just....bizarre and immature?

If you change the subject line and cut the 3rd paragraph it comes across as pointless but standard corporate nonsense where they feel the need to reiterate common sense stuff and ignore the fact that most people work for money not ideals, but having such a petty line reeks of playground bullshit.