The seven deadly sins are all things that have a serious negative impact on you and your life if you give into them too much. They’re all very general habits/feelings/desires that most people feel/experience which can lead you to hurt yourself and/or others, and haste/impatience checks both those boxes.
And I suppose as “sins” they’re supposed to lead you to do “un-Christian” things, but impatience probably does that more than sloth, right? Like you’re much more likely to hurt yourself and/or others if you do things fast without thinking than you are by just sitting and doing nothing all day.
I guess all of the sins are also all some form of carelessness too which also applies to being hasty or impatient.


No, not that summary.
(Please excuse that quip)
There is a difference between the usage of the story as explanation of the physical reality and as a way of interacting with the spiritual reality.
Law works because we assume free will while there is not much room for it. Similarly, a society can be constructed by telling more elaborate stories. Those stories don’t have to be true but they can be formed by many hours of critical thought.
Is an oxymoron
Better?
But then, are numbers real?
Numbers are actually useful. And no, not all of them are real.