There are plenty of distros that support systemd. I believe that it's important that someone is doing the work to make a Linux distro that works without systemd. The developers are tackling a complicated problem with upstream projects that are not always supportive (one might even say they're hostile) to their goal. Unless the goal is to attract more users for the sake of having more users it makes no sense to compromise that effort by splitting the userbase and the development effort between installs with and without systemd.