[therealjumbo]

The equivalent comparison with init scripts would be all the documentation and complexity of every program invoked by the init scripts, not just by sysvinit or rc's documentation and complexity directly. systemd just has most of that built in. And if you're using socket units, the order of what order to start things is essentially outsourced to the kernel, so that's a bit of a simplification.

Try building and maintaining a linux distro without systemd, especially for a large organization that needs to write their own init scripts. And especially when a large number of the devs in that org aren't shell experts, or don't understand the difference between /bin/sh and /bin/bash. And so on.

Here's another example: https://lwn.net/Articles/701549/ before systemd, for complex NFS setups, the sysadmin _had_ to write the init scripts per-site or per-machine. With the solution in the article (systemd generators) one set of unit files shipped by the distro solves the problem for over 99% of users, including most of the aforementioned complex setups.