> ...ch less likely for people to start developing such a novel genetically engineered virus.

only people that would do this would be crazy bc it cant be controled after release.

Yes but ethical responsibilities are entirely irrelevant, because that crazy person would still bioweapon you, and you kinda do not want that.

So regardless of if they're evil/bad/crazy or not, you still want to have that not happen. Hence the systemic perspective instead of the focus on the individual.