It shows that the claim that space mining enables mass-extinction level events is nonsense. Space mining can involve 11 orders of magnitude less mass annually than the K/T mass extinction impact.

The bar for mass extinction is much, much lower than the K/T impactor. The bar for widespread human suffering and death is much, much lower again. (edit: the bar for general terrorism is much, much etc.) You and myrmidon keep trying to anchor the conversation around these strawman criteria and mechanisms (i.e. "orbital bombardment", as if that was the topic). I'm sure it's just motivated reasoning but god damn is it hard to distinguish from bad faith argument.