Actor model (Akka/Orleans) for high-concurrency systems: still relevant?

i'm revisiting the actor model (think Akka, Orleans) for building highly concurrent and fault-tolerant systems. for certain types of applications, like real-time gaming or complex stateful services, it seems to offer a compelling way to manage distributed state and concurrency without locks. but with the rise of containers, serverless functions, and simpler distributed primitives, is the actor model still as relevant as it once was? for those who have used it in production, what are your operational experiences like, especially regarding actor persistence, recovery from failures, and debugging across thousands of actors? does it integrate well with modern cloud-native deployment patterns, or does it feel like a different paradigm that requires specific operational tooling and expertise?