This article is looking at things from a static perspective. If biohackers ever get to the point of releasing killer plagues, something along these lines would

This article is looking at things from a static perspective. If biohackers ever get to the point of releasing killer plagues, something along these lines would happen: (1) The earliest killer plague created and released by a biohacker kills thousands, but isn't even close to being fine-tuned enough to be an existential threat to civilization. (2) The powers that be, and society, now that their attention has been focused, react to this threat by restructuring themselves slightly to better handle more virulent threats of this sort in the future. (3) Go to (1), only with a somewhat more virulent outbreak. Then go to (2), only with a somewhat larger restructuring. By the time biohackers have gotten far enough up the learning curve to release truly effective plagues, society will have gotten far enough along the restructuring curve to handle them without being wiped out or even seriously set back.