Devices that may not be easily patched, especially industrial systems will not do as well in a world where LLMs are finding exploits. Atleast with other software the defending side can use LLMs and stay up to date in the arms race.
Anything that can be run offline should be airgapped and you still have to hope you dont get Stuxnetted.
We told you so. We told you that you need to secure devices properly before connecting them to the internet. That you need to update them. We told you, that refrigerators have no business being online. No, it is not "just a refrigerator, who would ever want to attack it".
This isn't unprecedented at all, several US bases were hit with this same thing in the last couple months. These companies security officers just aren't paying attention.