Resource Trigger is triggered for existing resources too

[naivary]

Hi guys. I'm pretty new to argo events. I have just configured my first argo events setup for a native kubernetes resource (namespace) and I figured out that by setting the EventType to ADD it applies the Trigger to the already exisiting namespaces too not just the namespaces which are created after the EventSource was created. Is this the expected behavior? If so, is it possible to change it?

apiVersion: v1
kind: ServiceAccount
metadata:
  name: namespacer
  namespace: argo-events
---
apiVersion: rbac.authorization.k8s.io/v1
kind: ClusterRole
metadata:
  name: namespacer
rules:
- apiGroups: [""] 
  resources: ["namespaces"]
  verbs: ["get", "watch", "list"]
---
apiVersion: rbac.authorization.k8s.io/v1
kind: ClusterRoleBinding
metadata:
  name: namespacer
subjects:
- kind: ServiceAccount
  name: namespacer
  namespace: argo-events
roleRef:
  apiGroup: rbac.authorization.k8s.io
  kind: ClusterRole 
  name: cluster-admin
---
apiVersion: argoproj.io/v1alpha1
kind: EventSource
metadata:
  name: namespacer
  namespace: argo-events
spec:
  eventBusName: "jetstream"
  template:
    serviceAccountName: namespacer
  resource:
    namespace-creation:
      group: "" 
      version: v1
      resource: namespaces
      eventTypes:
        - ADD

apiVersion: argoproj.io/v1alpha1
kind: Sensor
metadata:
  name: namespacer
  namespace: argo-events
spec:
  eventBusName: "jetstream"
  template:
    serviceAccountName: namespacer
  dependencies:
    - name: namespacer 
      eventSourceName: namespacer
      eventName: namespace-creation
  triggers:
    - template:
        name: netpol-deny-all-ingress
        k8s:
          operation: create
          parameters:
            - src:
                dependencyName: namespacer
                dataKey: body.metadata.name
              dest: metadata.namespace
              operation: overwrite
          source:
            resource:
              apiVersion: networking.k8s.io/v1
              kind: NetworkPolicy
              metadata:
                name: ingress-guard
                namespace: "" # dynamically determined from the event payload
              spec:
                podSelector: {}
                policyTypes:
                - Ingress