I’m not sure honestly sure what your point is, because you went a bit too far with the analogy.

Itty bitty ones, sure. And they take weeks to produce a working vehicle, of substandard quality.

This was about regulating 3d printers, not guns. A diy printer, a new drm printer and an old not-drm printer produce the same quality output.

A diy 3d printer is just as durable as a purchased one.

If your goal is to have an unregistered car, or in this case a drm free printer, the law seems silly when you can get one for cheaper than the “proper” one and have it out together in an afternoon if you have highschool level mechanical aptitude.