Ah yes, that is a great point. Erlang/OTP were designed to be used as actor systems, whereas the actor implementations in Scala and other JVM languages/framewor

Ah yes, that is a great point. Erlang/OTP were designed to be used as actor systems, whereas the actor implementations in Scala and other JVM languages/frameworks are at least one level of abstraction above that. Definitely agreed on Erlang/OTP having a wonderful set of tools for debugging/visibility, but I still stand by my assessment that OPs problems are from over-engineering (and secondarily from the ecosystem).