Honestly, SMF is superior to SystemD and it’s ironic it came earlier (and, that shows based on the fact that it uses XML as its configuration language.. ick).

However, two things are an issue:

1) The CDDL license of SMF makes it difficult to use, or at least that’s what I was told when I asked someone why SMF wasn’t ported to Linux in 2009.

2) SystemD is it now. It’s too complicated to replace and software has become hopelessly dependent on its existence, which is what I mentioned was my largest worry with a monoculture and I was routinely dismissed.

So, to answer your question. The argument must be: IllumOS over Linux.