Are there security implication when granting system:service-account-issuer-discovery for system:unauthenticated in OpenShift Container Platform 4

Issue

• We were requested to apply the below change on our platform and we now would like to know if we may hit security implication / risk when granting the below ClusterRole to system:unauthenticated.

  kubectl create clusterrolebinding oidc-reviewer \
    --clusterrole=system:service-account-issuer-discovery \
    --group=system:unauthenticated
  

• oidc-reviewer needs system:unauthicated.

• Are there concerns with regards to security when granting system:service-account-issuer-discovery for system:unauthenticated?