Exactly. I just want to keep a couple of processes running without having to learn the DJB ecosystem. I also want them portable if we shift off CentOS to Ubuntu in the future or something.
It also has the odd benefit of already being cross-platform, so even if you move whole systems distributions (e.g., from Debian GNU/Linux to FreeBSD), you can still use that same knowledge there too.
Edit: Note that simple does not imply easy. Daemontools, for example, does not provide a means for doing dependency handling, so you'll actually have to engineer around that by writing a script to handle it. Same goes for bouncing things that go off the rails. Same goes for pretty much anything that does not fall strictly under the purview of starting a process and restarting it if it crashes.
Try this 150-line C program, it's good enough for that one simple task: https://github.com/urbit/babysit/blob/master/babysit.c