Someone is building a systemd based kublet replacement.
Why? Because Kubernetes has some great ideas on self-healing and resiliency.
But if you are small, and can work with a single instance for availability, then probably should stick with systemd. You could also use podman to get a small bit of the kubernetes ideas for working with containers.
The next level of scale wouldn’t be the full k8s but more like k0s, or k3s.