That seems highly obfuscatory for describing a catastrophic event to a nonscientific audience. Might as well call it an “unplanned existence deficit” or something.

Right, but having your species single-handedly cause a mass extinction event on a scale not seen in 250 million years and having it happen in the span of a couple centuries (which is like a millisecond in geological time) seems like a pretty big deal to me. Like the biggest of big deals that we’ve ever lived through. This is a “there is a three mile wide asteroid inbound that will hit the earth in 80 years” kind of big deal.