At the end of the day it's SQL on top of my integration layer. I love that. I don't know how it'd work in practice, or if it's any better than adopting a data warehouse - but even for understanding state management or offering a tool to create a view of a "customer" data definition is valuable.

There's value to be had, I don't love the concept the author is proposing but the overall thing they're building, provided it "just works", certainly has some legs.