It's not an all or nothing thing. 2) some stuff has ALREADY been done, so it can't happen 3) even if a disease goes unchecked, I seriously doubt it's possible that everyone in the world gets it. I could be wrong but I doubt that's even possibly epidemiologically.
So why present it like it's even a remote possibility? ESPECIALLY to try to convince people that ALREADY don't think the disease is going to have the effect of even normal, more realistic projections. Even as just a critique of your strategy, it was not well played