You are confusing humanity and "humanity". Humanity-species is indeed rather hard to exterminate. Now if we are talking about actual individual humans, then 95% death rate is quite literally The Extinction.

This reminds me how people are misunderstanding and incorrectly quoting George Carlin sketch. Sure, the "Earth" will be fine. As in - the ball of rock will be fine. But we are not thinking about rocks when saying "Earth is in danger".

I'm pretty sure there is a formal name for this kind of semantic and pedantic substitution.