The bar has been crossed. Finland and other airlines flying in Northern Europe are suffering from GPS disruptions that make landing at smaller less-equipped airports impossible:

https://www.reuters.com/world/europe/finnair-pauses-flights-...

https://thebarentsobserver.com/en/2024/06/gps-interference-p...

Disruptions happen over a large area from Finland down to Poland and southern Sweden:

https://x.com/auonsson/status/1772005350134210751