Surely more than 10% of the time consumed by going to market with a cancer treatment is giving it to living organisms and waiting to see what happens, which can't be made any faster with software. That's not to say speedups can't happen, but 90% can't happen.

Not that that justifies doom and gloom, but there is a pretty inescapable assymetry here between weaponry and medicine. You can manufacture and blast every conceivable candidate weapon molecule at a target population since you're inherently breaking the law anyway and don't lose much if nothing you try actually works.

Though I still wonder how much of this worry is sci-fi scenarios imagined by the underinformed. I'm not an expert by any means, but surely there are plenty of biochemical weapons already known that can achieve enormous rates of mass death pleasing to even the most ambitious terrorist. The bottleneck to deployment isn't discovering new weapons so much as manufacturing them without being caught or accidentally killing yourself first.

It is easier to destroy than it is to protect or fix, as a general rule of the universe. I would not feel so confident about the speed of the testing loop keeping things in check.