1) What about Kafka + KRaft, doesn't that suffer the same problem you point out in Redpanda? If so, recommending to your customers to run KRaft without fsync would be like recommending running with a Zookeeper that sometimes doesn't work. Or do I fundamentally misunderstand KRaft?

2) You mention simultaneous power failures deep into the fsync blog post. I think this should be more visible in your benchmark blog post, when you write about turnning off fsyncs.