i hope you are right.
Same problem here vC is version 8.0.1 Build 22088981. NAPP config 4.0.1-0.0-20606727. NSX Version 4.1.0.2.0.21761695.
Bulky error/warning message:
{"function":"CreateGuestCluster","level":"warning","msg":"Warning: v1alpha1 version of run.tanzu.vmware.com/TanzuKubernetesCluster is deprecated. Please use v1alpha3 or above\nError from server (unable to find a compatible full version matching version hint \"1.21.6\" and default OS labels: \"os-arch=amd64,os-name=photon,os-type=linux,os-version=3.0\". Existing TKRs may have different OS labels. Please use .spec.distribution.fullVersion (in TKC v1alpha1) or .spec.topology.controlPlane.tkr.reference (in TKC v1alpha2+)): error when creating \"napp-deploy-cluster.yml\": admission webhook \"version.mutating.tanzukubernetescluster.run.tanzu.vmware.com\" denied the request: unable to find a compatible full version matching version hint \"1.21.6\" and default OS labels: \"os-arch=amd64,os-name=photon,os-type=linux,os-version=3.0\". Existing TKRs may have different OS labels. Please use .spec.distribution.fullVersion (in TKC v1alpha1) or .spec.topology.controlPlane.tkr.reference (in TKC v1alpha2+)\n","time":"2023-09-08T09:15:29Z"}