I'd rather have a system that does it better without having to resort to scripts all over the place to make up for deficiencies in the system.
You seem to be making the tacit assumption that everything works perfectly. If I am debugging a system then I would much prefer to deal with scripts (usually all in one place or otherwise easily found) than have to try to debug C and C++ code and XML schema. See Theodore Ts'o comments that were linked to above.
It reminds of me dealing with Microsoft systems (many years ago from the NT days, maybe they have changed since then). *IF* everything works pefectly then it is fine but as soon as you are in the mode of tracking down problems then it becomes a nightmare. This is why I made the switch from Windows-NT to Linux when I was doing sysadmin at a university. If I wanted to use a system that was like that then I would use Windows. This tacit assumption that the system was designed perfectly so there is no need for any intervention is one of the reason people don't want to give up init scripts on their Linux systems and replace them with systemd.