“Just know planet-wide destruction could be under a week away and we could have no idea. Neato.”
Not from a 25 foot diameter will there be planet wide destruction. If it made it through the atmosphere and landed on your house you and the neighbors would have a very bad day.
No, not from a 25 foot one, from a larger one capable of causing massive destruction — as noted above, he’s talking about the short time frame between detection and encounter.