Readme: Make more clear notice

README.md

@@ -1,8 +1,11 @@
 > ⚠️ **IMPORTANT NOTICE:** Images under `gcr.io/kubebuilder/` Will Be Unavailable Soon
 >
-> 🚨The image `gcr.io/kubebuilder/kube-rbac-proxy,` will become unavailable.
-> Your projects will be affected and may fail to work if the image cannot be pulled.
-> You must move as soon as possible, sometime from early 2025, the GCR will go away.🚨
+> **If your project uses `gcr.io/kubebuilder/kube-rbac-proxy`** it will be affected.
+> Your project may fail to work if the image cannot be pulled.
+> 🚨You must move as soon as possible, sometime from early 2025, the GCR will go away.🚨
+>
+> The usage of the project [kube-rbac-proxy](https://github.com/brancz/kube-rbac-proxy) was discontinued from Kubebuilder
+> and replaced for similar protection using `authn/authz` via Controller-Runtime's feature [WithAuthenticationAndAuthorization](https://pkg.go.dev/sigs.k8s.io/[email protected]/pkg/metrics/filters#WithAuthenticationAndAuthorization).
 >
 > For more information and guidance see the discussion https://github.com/kubernetes-sigs/kubebuilder/discussions/3907