You might be giving Lennart too much credit. As the author of the article points out, Lennart didn't invent PulseAudio and systemd so much as he ripped them off (poorly) from coreaudio and launchd. To compare him to any inventor seems too flattering.
Don't you still have to resort to shell scripts for anything slightly complicated (mounting a drive on a specific network connection) and just have systemd invoke them?