[oweiler]

The technologies (Kafka, Kafka Connect, Kafka Streams, whatever you use) have stabilized somewhat but Event Sourced systems are as complex as ever.

[tkubacki]

Kafka and friends can be used in reactive pattern paradigm ( understood as here https://www.youtube.com/watch?v=eRxLfUIMJwk&t ) - only partially overlaping ES idea, which in general has much more sense to me.