At the same time, the list of bug reports that the init scripts used with sysvinit had (because they all had to replicate the same code, in different ways, patched together from some stackoverflow post) is uncountable.
That's not an inherent problem: bsd's rc.subrs and similar systems exist, which fix this issue in a sysv/bsd style init system. They don't even technically require patching init itself.
Systemd's problems are deeper in. One major one is most of its design, and its entire conception.
