Dodged a bullet there, I'd say. You can safely assume that google will EOL anything in GCP that you might actually start relying on for business function.
I don't fully agree with parent, and GCP is differently managed compared to other Google products.
That said, the k8s version deprecation policies, mixed with significant changes in cluster setup from times to times you have to keep up with is peculiar. I kind of think this is something we accept when going into k8s, but I'd understand people not at ease with that philosophy.
"Dear Google Cloud: Your Deprecation Policy is Killing You": https://steve-yegge.medium.com/dear-google-cloud-your-deprec...