This only covers OLAP which is way, way simpler to handle than a system to implement OLTP. Like, sure if you don’t need mutability but do need large scale, go for OLAP. Thats not actually a solution for many use cases though and it’s certainly an exaggeration to say it lets you beat the CAP theorem, when by far the hardest problem with the CAP theorem is handling the consistency and availability of replicated mutable data