It should be a simple task to add that command and it is widely used. It sounds more like a business decision to not add it. It is not unusual that cloud providers make it difficult to delete data for various reasons.
As it currently stands, it is as difficult to get data onto Azure - you're supposed to manually deploy a container yourself to whichever cloud provider you are using, there is no "Managed Garnet" solution yet (but given hype it will probably arrive at some point).
With that said, I'm slightly skeptical of/worried about Garnet but the reason is different - it received a bit too much hype soon after going public and I'm concerned it will be subject to corporate politics that often plague projects like that.
I was of course talking about a managed service. And the problem with deleting data exists in several Azure producs like Cosmos DB, Table storage, App Insights and so on.
