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> he repeatedly

Surely the first occurrence led to a post-mortem which documented and forbed the practices that became known to be dangerous for production.

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Yes, that is presumably what "after being explicitly told not to do that against the prod database" refers to.

Action items from a post mortem should not be “do better, human” but “prevent the humans from making this mistake, machine”

And missing details like, did his job require data analysis? Was he involved in coming up with the resolution in the post mortem, or was it done by someone unrelated?

True, learning from your mistakes should be a given. In this case the person involved was completely ignorant though.

Maybe. Unclear if it was documented or just told verbally.

I don't know for sure but I believe there was a PIP and so on.

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