It's not really a "Poettering" thing.
More like a "Red Hat" thing. They control (= their employee are mantainers and developers of) most linux core userspace programs/libraries, starting from Udev and Dbus and Upower, they/their developers make the choices that matters in that regard.
It's how OSS operates.
How'd PulseAudio get stuck in so much stuff? Is this a pattern?