HPE has other HCI plays...
HPE has thousands of vSAN customers, is still a VMware OEM partner, and offers vSAN on Greenlake in addition to simplivity.
There is the (Dead) LeftHand based HCI. They still have some customers under active support. I"m sure both of them are annoyed..
I don't see the need to rebrand a CI bundle with Nimble as HCI other than IDC now including Datrium and others in this market so the presumably bored analysts can cover more than just VMware and the slow death of Nutanix.