...but there are plenty of useful things that we ban the general public from having access to.
Opium poppies. Automatic weapons. Gas centrifuges.
In fact, if you start publishing detailed designs for the last one you're likely to have people in suits who only go by first names visiting you in pretty short order.
It's more like trying to ban web or emails in one country because somebody can create harmful website or send harmful emails.
Sooner or later we will have to look at information through AI lenses. Before seeing anything it'll go through filtering and transformation to weed out spam, misinformation and do fact checks etc.
You can't build this defense future with crippled law.
Yeah, war is bad. Sometimes the alternatives are worse.