It’s like the ATLA episode with the town that’s about to be destroyed by a volcano. The townspeople claiming that the prophecy was still true even though without Aang they’d be dead.
It’s not that the threat didn’t exist, it’s that people worked night and day on things like energy infrastructure SCADA networks and other critical areas so that we wouldn’t lose a bunch of shit during the rollover.
Some stuff still did go down, but it was mostly government and thankfully small enough that it didn’t really matter.