False premise: "Unintentional failure is not a failure." Lack of intention for a failure certainly weakens the ethical culpability of the action, but it doesn't

False premise: "Unintentional failure is not a failure." Lack of intention for a failure certainly weakens the ethical culpability of the action, but it doesn't weaken the technical or pragmatic severity of the failure. What's the point in saying the bash failure isn't a bug. It's an unwanted behavior. What else is a bug?