That’d be like outlawing hammers because someone figured out they make a great murder weapon.
Just because you can use a tool for crime, doesn’t mean that tool was designed/intended for crime.
Not exactly. This would be more akin to a company that will 3D printer metal parts and assemble them for you. You use this service and have them create and assemble a gun for you. Then you use that weapon in a violent crime. Should the company have known better that you were having them create an illegal weapon on your behalf?