Earlier quoted context omitted.
Regarding knoppix abandoning it... Meh. Knoppix is a live system, so all of the things systemd was designed for don't apply. I guess it can make sense for their knoppix's use case.
Knoppix is very installable and usable as a main operating system. Knoppix claim to fame is automatic configuration. If your Xorg or sound was giving you grief after a fresh install, you'd live boot Knoppix and copy the configuration files back to your installation. From this p.o.v. it makes sense for Knoppix' use case, because, as stated by Klaus Knopper: "This bypasses systemd's interference with many system compon…
Is it really so? I would expect all distributions to have stolen that feature by now. Xorg works out of the box basically everywhere. I've had a glitch with a microphone on a 3-pin jack on a Ubuntu system, and I doubt Knoppix would have known that a modprobe config change was needed.