Cheap Complexity.
https://www.schneier.com/blog/archives/2022/08/security-and-...
The article is directly talking about mass-produced electronic commodities. The same is even more so for bits where the cost of copying is not merely "low" as in microcontrollers, but essentially free.
In my opinion, systemd does solve a lot of problems, at a cost of somewhat more complexity and resource utilization. But it is the nature of material culture to complexify with time as more physical resources become available, i.e., "progress". More advanced commodities don't come out of a thin air of "better processes", but processes that interweave with other parts of the economy more intimately given the previously produced commodities. Something similar can be true inside the computer.