Why would you bother arguing with an LLM? If you know the answer, just walk away and have a better day. It is not like it will learn from your interaction.

The Gell-Mann effect? If you can't trust LLM to assist with troubleshooting in the domain one is very familiar (mdadm), then why trust it in another that one is less familiar such as zfs or k8s?

Maybe GP knew the proposed solution couldn't have worked, without knowing the actual solution?