I used Linux (and some Unix) before systemd was a thing and init scripts are jank. So much boilerplate and that was before things like proper isolation existed and other more modern features.
I don’t understand why anyone would want that back.
A replacement of systemd with something else would be fine, but please no more init scripts and pointless run levels.
Upstart was fine. It does the parallel init thing without taking over the whole OS.
I almost forgot it existed. It was a slight improvement, but with a whole bunch of new problems (most notable race conditions which were never fixed) and it was made obsolete by systemd.
It was a good evolutionary step only used by Ubuntu iirc. It was better at that time than the previous init system, but not more than that and it never found wide adaption.
