it's useful when you don't have direct access to ES. so you'd need you 1 endpoint, that's Kibana. you don't need to know about .kibana or _doc (type). you could export or backup you index pattern and insert it into another Kibana. however, also the API way is experimental.
Do not write documents directly to the .kibana index. When you write directly to the .kibana index, the data becomes corrupted and permanently breaks future Kibana versions.
Should I be worried? I tested it but everything seemed fine.
We don’t officially support it and if you do it wrong you can break stuff .. and fix it by deleting it again. If it works for you it’s fine, but you have to be aware that there might be changes in the futur
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