I would suggest a better word to describe systemd design philosophy is authoritarian, if we're going to stick with political science terminology.
Human systems tend to flourish when political and economic decision-making is relatively distributed throughout a given population. I believe this position is backed by a reasonable amount of empirical observation.
Machines are (as of this writing) programmed by humans. Unlike humans, machines are automated rule-followers. This is substantively different from decision-making, which is a uniquely human trait involving moral agency, free will, etc. (at least as I'm defining it for the purposes of my argument). If you try to turn humans into automated rule-followers by decree, they tend to become miserable. Fortunately, one does not have to take into account how machines feel about being absolved of all decision-making, making such control systems very effective (you don't have to kill / imprison the dissenters). But even though the machines might be more effectively programmed by a centralized, unified, top-down, "authoritarian" control architecture, you still need humans to build this controller. And since we know software projects end up mirroring the communication structure of the humans in charge of building them, it follows that authoritarian-minded software engineers would be a best fit for building such systems.
The converse is that libertarian-minded software engineers tend to recoil in horror when they encounter authoritarian software design, no matter how unified, elegant, or effective it may be. Such things are a moral transgression to the libertarian.