> As far as complexity goes, I would much rather have a nodes where a single application is running and using 100% of resources (instead of having containerd or k8s services running) and do simple autoscaling, having access to host-level metrics that I can map back to applications easier than use Docker, k8s & co. Maybe is it only me, but I care about efficiency. Why waste energy?

Hallelujah! I'd imagine inefficient containered architectures do more for the cloud provider's bottom line rather than help the customer.