This specific attitude is something that I have capitalized on in many ways in my life to do well: ad tech, location data, trading. There is massive alpha in not being like this. And if this DNA synthesis thing had some value to me I would gladly do it and may the terrorists breed superbugs from it if they will. Even if you convince him, you won't convince me. I will become
even more convinced that I should build the building blocks for extinction weapons. Every time you make this argument, I will move closer to doing it.
One day, I will do it just because I can and because you argued I shouldn't. Then your actions will be a proximate cause of the existence of the thing.
Ideally, I would not be so controllable but a deep part of me loves the transgressive nature of fighting a puritan.