[account42]

No, one complaint (out of many) against SystemD is that it moves too much complexity into PID 0 which is a very special process on Linux that must not crash ever or the whole system goes down with it. The init system is one thing that SystemD insists on running under PID 0 even though it could be designed otherwise.

[remix2000]

But PID 0 on Linux is the idle task…? Init is (usually) PID 1, PID 0 kinda just means that nothing is running on a given CPU (with caveats), also killing 0 has special meaning because well it's not a real process…

[direwolf20]

Nitpicking. Of course they meant PID 1.