Yup. I'm fully with you. You need have evidence of serious unavoidable problems before you go down the route of having lots of distributed systems and communica

Yup. I'm fully with you. You need have evidence of serious unavoidable problems before you go down the route of having lots of distributed systems and communication between them, because those systems are far harder to reason about globally, and debug. There's a high risk of undesirable emergent properties and cascading failure modes.