Referring to "25 centimeters per year" as "so fast it can be seen from space" is so funny to me.
We have very good satellites! Lots of things can be seen from space. "can be seen from space" is an awful way to provide readers intuition for the scale of something.
The described pattern is standard in Meta. This, along with the infrastructure and tooling to support it, was the single largest "devx quality of life improvement" in my experience moving to big tech.
Microservices should have clear owners reflected in the org chart, but the topology of dependencies should definitely not be isomorphic to your org chart.
TL;DR: assuming you've squashed all regular non-determinism (itself a tall ask), you either need to ensure you always batch requests deterministically, or ensure all kernels are "batch invariant" (which is absolutely not common practice to do).