you guessed it. More quotes.

templates/windowsserver/flavor/small.yaml

@@ -2,7 +2,7 @@ apiVersion: template.openshift.io/v1
 kind: Template
 metadata:
   name: windows-server-2022-small
-  namespace: ${TENANT_NAMESPACE}
+  namespace: '${TENANT_NAMESPACE}'
   labels:
     template.kubevirt.io/type: 'vm'
     os.template.kubevirt.io/win2k22: 'true'
@@ -16,7 +16,7 @@ objects:
   - apiVersion: kubevirt.io/v1
     kind: VirtualMachine
     metadata:
-      name: ${NAME}
+      name: '${NAME}'
       annotations:
         description: Windows Server 2022 VM Demo
       labels:
@@ -49,7 +49,7 @@ objects:
                 - masquerade: {}
                   model: virtio
                   name: default
-              networkInterfaceMultiqueue: 'true'
+              networkInterfaceMultiqueue: true
               rng: {}
             features:
               acpi: {}