Whenever the line between a technical discussion and a systemd bashing thread becomes blurry, someone who does DevOps for a living invariably pops up to say how much they like systemd -- usually for pretty valid reasons.
It's also ubiquitous enough that, by this point in time, some of my younger colleagues who do DevOps for a living have never used anything but systemd. Doing Stack Overflow-driven (aka copy-paste) DevOps without systemd is pretty challenging nowadays.
Hence the joke.
Otherwise, yes, of course you can do DevOps on Void. I can't imagine what you couldn't do DevOps on; I know folks who were doing it on Novell Netware before the whole thing even had a name.