I don't know what they say, but I do now they have a systemd-shim package that you can use to emulate systemd functionality when you don't use it as the init sy

I don't know what they say, but I do now they have a systemd-shim package that you can use to emulate systemd functionality when you don't use it as the init system. And the sysvinit package hasn't been removed. https://packages.debian.org/jessie/systemd-shim https://packages.debian.org/jessie/systemd-shim https://packages.debian.org/jessie/sysvinit-core https://packages.debian.org/jessie/sysvinit-core