It's almost impossible to tell.

Yes, plenty of low hanging fruit around; Heck, I can probably literally ask chatGPT to implement for me a few ideas I've got.

OTOH, I've known since secondary school of two distinct ways to make a chemical weapon using only things commonly found in normal kitchens, and absolutely none of the post 9/11 aftershock attacks that got in the news over the next decade did anything remotely so simple, so that example makes me confident that even bad rules passed in haste — as many of them were and remain — can actually help.

(And that's despite my GCSE Chemistry being only grade B).