That's exactly right, and it shouldn't be their call how someone uses their thing. When I acquire a hammer, I don't have to sign an agreement that it will never be used to build a wall, and the world is better for this. Just because you have an idea, you shouldn't be granted the legal power to send the police after people who use your idea "the wrong way". To me, this goes just as much for copyright as it does for this new trend of "ethical" licences.
>On a practical level this would massively chill research, as most builders and engineers I know give significant consideration to the impact of their work
Good? People who develop things that can be used for harm and then act entitled to be the arbiter of what that "harm" is are just kidding themselves into trying to have their cake and eat it too. For the things that cause real harm, the actors that are going to cause the most harm (nation states) aren't going to listen to what you have to say no matter what (a recent film comes to mind).