Node Pools aren't being set w/ automatic node repair, node updates, or Autoscaling

[lesv]

My input:

module "gke-cluster" {
  source = "google-terraform-modules/kubernetes-engine/google"
  version = "1.19.1"

  general = {
    name = "${var.cluster_name}"
    env  = "${var.environment}"
    zone = "${var.gcp_zone}"
  }

  master = {
    enable_kubernetes_alpha = true
    username = "admin"
    password = "${random_string.password.result}"
  }

  default_node_pool = {
    node_count = 3
    machine_type = "${var.node_machine_type}"
    disk_size_gb = "${var.node_disk_size}"
    disk_type = "pd-ssd"
    oauth_scopes =   "https://www.googleapis.com/auth/compute,https://www.googleapis.com/auth/devstorage.read_only,https://www.googleapis.com/auth/logging.write,https://www.googleapis.com/auth/monitoring,https://www.googleapis.com/auth/servicecontrol,https://www.googleapis.com/auth/service.management,https://www.googleapis.com/auth/devstorage.read_only,https://www.googleapis.com/auth/cloud-platform,https://www.googleapis.com/auth/monitoring.write,https://www.googleapis.com/auth/pubsub,https://www.googleapis.com/auth/datastore"

#    autoscaling {   ## I've tried with both this, and this commented out.
#      min_node_count = 1
#      max_node_count = 10
#    }

#    management {  ##  DEFAULTS to TRUE so it should just work, but it's not on 10/30pm
#     auto_repair = true
#     auto_upgrade= true
#    }
  }

  node_pool = []
}

I get:

With things commented out looking in terraform.tfstate:

                "google_container_cluster.new_container_cluster": {
                    "type": "google_container_cluster",
                    "depends_on": [
                        "data.google_container_engine_versions.region",
                        "local.name_prefix"
                    ],
                    "primary": {
                        "id": "knative-dev-us-west1-c-master",
                        "attributes": {
 .
 .
 .
                            "id": "knative-dev-us-west1-c-master",
 .
 .
 .
                            "name": "knative-dev-us-west1-c-master",
 .
 .
 .
                            "node_pool.#": "1",
                            "node_pool.0.autoscaling.#": "0",
                            "node_pool.0.initial_node_count": "3",
                            "node_pool.0.instance_group_urls.#": "1",
                            "node_pool.0.instance_group_urls.0": "https://www.googleapis.com/compute/v1/projects/lesv-008/zones/us-west1-c/instanceGroupManagers/gke-knative-dev-us-west1-default-pool-68956134-grp",
                            "node_pool.0.management.#": "1",
                            "node_pool.0.management.0.auto_repair": "false",
                            "node_pool.0.management.0.auto_upgrade": "false",
                            "node_pool.0.max_pods_per_node": "0",
                            "node_pool.0.name": "default-pool",
 .
 .
 ;

I would expect to either set it, or following the comments in the code get that as the default, will look again in the AM incase of operator error, as I'm very much a nube w/ terraform, GKE, and kNative. (Though I've built several clusters by hand)