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The (somewhat obvious) parts about staged rollouts and selection criteria for initial deployments are useful. If CrowdStrike had rolled to a small demographic first. Billions of dollars could have been spared the shredder.

I bet staged rollout are on some poor PO's backlog. We don't have the bandwidth for such niceties! :')

Eventually you’re going to make a change that completes 100% of the production rollout. That change should be tested too, as any change is a new opportunity to break something.

Sometimes it's not so simple. If your prod is already broken, a slow rollout becomes a liability. CrowdStrike didn't have any real reason for a global push, but if it were to patch a 0-day already being exploited, customers might rather risk downtime than breaches.

Everyone has a test environment, the lucky ones have a separate production environment.

I thought the colour and anecdotes were useful towards conveying the message. Sometimes only after you've experienced something for yourself does the reduced pithy one liner make sense and resonate.