This is kind of like saying, “What if only America existed?” There would certainly be some disruption, but it wouldn’t exactly be the end of civilization. Now, randomly distribute those people across the world, and it gets harder. But. The hypothetical plague didn’t kill 95% of the population, it made them infertile. That gives you decades to prepare and recover if you’re aware of the problem.
This is kind of like saying, “What if only America existed?” There would certainly be some disruption, but it wouldn’t exactly be the end of civilization. Now, randomly distribute those people across the world, and it gets harder. But. The hypothetical plague didn’t kill 95% of the population, it made them infertile. That gives you decades to prepare and recover if you’re aware of the problem.