What marketing? The only time I hear that is about people mad at Go being popular and not liking it, I've never seen marketing from Google toward Go. The language is popular because it's powerful and yet very simple to onboard, the standard lib is good as well as the documentation, that's why it's popular not because of Google.

You mention Kubernetes, but forgot all the other widely used projects that are not from Google: Docker, Grafana, etcd, all the Hashicorp tools ( terraform, packer, consul .. ), Prometheus, InfluxDB, Hugo, CockroachDB ect ...