In everything you've listed, my conclusion is the opposite. The spread across multiple managed services is not a bad thing, that's actually better considering that using them reduces operational overhead. That is, the spread is irrelevant if the services are managed.

The ugliness of k8s is that you're bringing your points of failure together into one, mega point of failure and complexity.

Final aside - you absolutely should be using IaC for any serious deployments. If you're using clickops or CLI then the context of the discussion is different and the same critera do not apply.