while I can't speak on most of this, I will say the most relevant words I ever heard on the subject.

"If you can't predict what some one will use your ideas for to harm another creature. you should never share it as you cannot mitigate it by design". no matter what you make, some one will turn it into a weapon as the desire for weak, small people to supplement themselves through violence is ever present through human history.

greatest weapon of all time was the pen. it's not mightier than the sword at violence, but can silence a sword in a single stroke.