We are all fortunate that as fc417fc802 mentioned, refining the materials proves to be quite challenging and I see no particular way that AI could possibly make that any easier. If it was as simple as building a gun-type nuke banging together any uranium together to get a big bang we'd be living in a very different world.
But it's not as simple as just refusing help on a broad swathe of topics they way they do now. That makes agents much less useful in general (ie lots of collateral damage) and for many topics is entirely ineffective given that for better or worse the internet already makes such material readily available. In such cases reporting suspicious behavior is likely to be much more effective than denial.
Aside: You've now got me curious and I really want to test the frontier models to see to what extent they're capable of providing sensible designs and specifications for implosion type thermonuclear weapons but also feel like that would attract the wrong sort of attention and probably create a headache for me in more ways than one.
The data is often wrong enough it screws whoever tries it unless they have enough experience/knowledge to not need it, or really doesn’t help beyond what someone using existing tools to get - albeit with a little more motivation.
At best, it either gets someone started with something they still need to think to finish, or gets them deep into a mess it can’t help them get out of. In my experience.
In some edge cases, it can be used by experts to automate some grunt work or do prototypes without getting in the way, but often a better thought out framework is usually faster in my experience.
Awhile ago I made an analogy about WYSIWYG gui tools, and the more this comes up, the more accurate I think it really is.
And yeah, the censorship model is wrong, but also the underlying other model is wrong too.