So you can easily start and stop it as a service and you get your logging easily accessible via journalctl as a unit. But practically speaking there’s not much difference.

With these systemd mount files I don’t need to touch the fstab, I can use ansible to copy the file, enable the service then start it. I can also have other services like Docker, Jellyfin or whatever to depend on that service. If the nfs share can’t be mounted then systemd won’t try to start docker.