Informed speculation but I believe this is correct. Specifically new modern (maybe vibe coded) software that is probably really tough to integrate with the hodgepodge of ancient systems current propping up our control system.

I would expect there to be primary and backup services of communication. Such a massive/critical update would most likely be tested on a smaller region with the capability to fall back to the backup servers.

But also hearing how outdated and antiquated a lot of the facilities are (I know they’re rushing to upgrade everything from floppy disks), I could bet that the backup transmission services might not even be operational for some facilities.