I think it's fine if you are happy with your crontab/systemd based system. But the author already has a k8s cluster with storage and VM automatically provisione

I think it's fine if you are happy with your crontab/systemd based system. But the author already has a k8s cluster with storage and VM automatically provisioned in a declarative way, so what's wrong with that? crontab/systemd would be more complicated for them.