--kubeconfig option does not work

[nirs]

The command help document --kubeconfig flag:

% kubectl rook-ceph -h  
...                                               
Flags:
      --context string              Kubernetes context to use
  -h, --help                        help for rook-ceph
      --kubeconfig string           kubernetes config path
  -n, --namespace string            Kubernetes namespace where CephCluster is created (default "rook-ceph")
      --operator-namespace string   Kubernetes namespace where rook operator is running

But trying to use the flag we fail with:

% kubectl rook-ceph --kubeconfig c1.yaml -n openshift-storage ceph status
Error: invalid configuration: no configuration has been provided, try setting KUBERNETES_MASTER environment variable

This works:

% KUBECONFIG=c1.yaml kubectl rook-ceph -n openshift-storage ceph status  
Info: running 'ceph' command with args: [status]
  cluster:
    id:     18b77a48-b64a-4665-a339-b9c1da4669e3
    health: HEALTH_WARN
            1 daemons have recently crashed
... 

Version tested:

% kubectl krew list                                                      
PLUGIN     VERSION
krew       v0.4.5
rook-ceph  v0.9.3

% kubectl version --kubeconfig c1.yaml
Client Version: v1.32.3
Kustomize Version: v5.5.0
Server Version: v1.31.6

 % sw_vers
ProductName:		macOS
ProductVersion:		15.3.2
BuildVersion:		24D81