Ok this is insanity. The thing keeping people from making destructive devices is the difficulty in synthesizing white fuming nitric acid and similar required precursors. You can Google wherever shit you want if you use someone else's wifi and you
should be able to at least Google whatever you want without the feds showing up.
The danger of ai has nothing to do with what the average Joe might try to do, it has everything to do with what soulless corporations are doing to you right now and how it enables them to be even worse in the future.
Right now your roof is being scanned by aircraft with cameras and AI is being used to determine how old it is and if there are tree branches nearby. They're also looking at and classifying objects in your back yard to determine safety risks. It's not horribly accurate but because of the scale it doesn't matter to the companies, you just get fucked. Accidentally bag something you didn't scan at the self checkout? They have AI for that too, there are multiple reports of people being hunted down and charged with theft for simple mistakes.
Your chances of having your life ruined of degraded because of AI are massively higher than your chances of being hurt by a random individual using it to build destructive devices.