42% fewer employees, 7 years in the future? Including hopes for things like this: "Jansen also said that around 10,000 fewer people would be needed to service and repair digital networks, which “go wrong less often” and can be fixed more easily than older networks." That feels optimistic. Modernization does help with that sort of thing in some ways. But it also often adds complexity, higher dependency counts, etc.
But I'm with you in the sense that new technology that does more than what they replaced will absolutely be added and need fresh workforces.