What is the advantage compared to the traditional method of getting a single Linux system or VM, installing the needed packages via apt/yum, rsyncing over your

What is the advantage compared to the traditional method of getting a single Linux system or VM, installing the needed packages via apt/yum, rsyncing over your code (if any) and installing systemd units for anything that needs to run all the time or scheduled? Are Helm charts easier to use or more prevalent than distribution packages?