People have been saying that since about the invention of the internet.

There's already a bunch of documented ways to exploit system hardware to jump airgaps. Bang the system bus the right way and it's a radio antenna that can directly connect to nearby mobile phones.

The easiest one is, of course, sending a message to a human saying "yo, I need internet". Humans are eager to please and easily fooled, and anthropomorphise everything: https://en.wikipedia.org/wiki/LaMDA#Sentience_claims

And that's just for good humans. The moment we got AI worth a penny, everyone with money to invest put a model on the web and tried to charge for access to it.