Yeah I was thinking more on the scale of nation-state level actors. Most leaders would not consider a bio weapon due to potential blowback on their own population, as they generally don’t want to be the leader of a nation of corpses and ashes.

But if they don’t care, or if they already are the leader of a nation of corpses and ashes, maybe there’s not so much holding them back.

In my layman’s perspective, bio weapons seem to be more dangerous and volatile than nuclear weapons. And increasingly easier to engineer as biotech advances. I think about the headlines of “microscopic robots that target tumors from within your body” and see the horrifying opposite side of the double-edged sword.