Who benefits from those “advances” in technology in that case?
To argue that dangerous/unethical/X research must be done just because a potential adversary is also doing that research is what armed the world with the nuclear option in the first place. Sure, nuclear weapons would likely have been theoretically discovered anyways, but did they need to be actually built? Did we need to execute on actually building and using nuclear weapons to understand practical use cases for nuclear energy?
Because I am certain that powers today in an arms race with each other could and would, by this logic, discover and unleash entirely new man-made horrors upon this world that make nuclear weapons look elementary, if this is the path we’re going to go down.
Just because some people choose to study eugenics does not mean we all have to (or should).