I kind of can’t tell if this is a spoof? The first point is literally “decentralise ALL the things!”. Ok great.

Next… decentralised Postgres, what does that even mean? Like if we have a decentralised system that is a database, where do I write data? How do I know where to read data? Do you have redundancy? If so what’s the cost? Are you literally just hosting multiple Postgres’s with duplicate data behind some load balancer? Do you need multiple load balancers? What’s your consistency model?

It’s just very unclear to me what this person is asking for?

Just stick with mongodb, it’s webscale…