>If the information isn't there why would they need safeguards against it?

If the information is in the corpus then it's also in the public Internet and/or in books. The safeguards are there not because the model knows non-public information, but because it's a bad look for the model to dispense that information.

>they will tell you how to make a bomb with easily available items

Making a chemical explosive is trivial compared to making a nuclear weapon.