I'm actually don't agree at all to this. Is e.g. the MillWheel software, or Kafka, or Storm/Spark inherently unreliable and non-performant because they feature

I'm actually don't agree at all to this. Is e.g. the MillWheel software, or Kafka, or Storm/Spark inherently unreliable and non-performant because they feature strong consistency and bounds on their operations? I don't think so.