I said you'd need those if you were coding jobs in typescript natively, without aid of cloud primitives like AWS SQS and Lambda, not with elixir.

sorry, maybe I wasn't clear enough when asking.

what about elixir that eliminates the need for kafka. simple queues I understand but kafka ?

Sure Kafka is used for much more advanced applications. In autonomous microsservices if I'm not mistaken these topics could be even used as the source of truth so that each specialized database could be reconstructed by replay. I'm saying that for simple topics that are just used to coordinate job queues, elixir can handle it just fine.