Well he developed launchd for OSX, that was a partial inspiration for Poettering to develop the init part of systemd. Note the launchd stops well short of the scope creep that systemd has engaged in.

That said i think Hubbard has given up on getting one of the existing BSDs to adopt launchd. Instead he has forked Freebsd into Nextbsd and added launchd there.

Note the difference between that and how systemd is crawling its way into every big distro out there by absorbing (udev) or replacing (consolekit) existing, loosely coupled, projects.