> decentralised energy generation is going to be the way developing economies leap over more advanced ones.

Good luck with running industries on decentralized energy production. That's how things started during the industrial revolution, and the grid was a net upgrade. Reason for that is building a factory is much cheaper when you don't need to also build the adjoined power plant.

Decentralized production works well with residential or low consumption tertiary sector, but not much else. Even then, a working grid will have better quality of service and economies of scale on equipment. The issue with developing countries is that their grid typically is dysfunctional.

> The outcome is a much more resilient grid energy system.

That claim depends a lot on the threat model you're looking at. If your goal is to still have some energy under coordinated attack, sure. If your goal is to maximmize uptime for critical services, not so much. Backup generators, inverters, etc. typically have a higher rate of failure than a well-performing grid.