No, that's a really bad analogy: systemd offeres comparable features to SysV init and much more useful functionality outside of pid 0. It even had a program[1] to automatically convert old SysV init scripts to systemd unit.
In fact the main criticism is that systemd tries to do too much by trying to replace a lot of traditional UNIX software cron -> timers, sudo -> polkit, udev -> systemd-udev, consolekit -> systemd-logind, etc.
I've never seen a complaint that systemd breaks existing setups. Wayland, on the other hand...
I've never seen a complaint that systemd breaks existing setups. Wayland, on the other hand...
[1]: https://www.freedesktop.org/software/systemd/man/latest/syst...