SystemD definitely spurred some controversies years ago but is it that bad in 2019? All major distros adopted it and even some that are listed there as "no systemd" in reality just give you choice (e.g. Gentoo). I'd gladly hear the opinion of distro maintainers why did they switch to SystemD if it's as bad as it looks like in people's perception.
They didn't really have an option: the same organisation controls GNOME and systemd, so they introduced systemd as a hard dependency of GNOME to force distros to adopt systemd. And you can't have a distro out there without GNOME, so... Those distros that can run without systemd have to make their own patches to "fix" GNOME, which is very costly. Even Gentoo struggles with that, as it takes them a long time to release…
cough cough Slackware cough cough Kubuntu/Xubuntu/Lubuntu cough cough Tiny Core Linux cough cough the literal dozens if not hundreds of distros that ship with a desktop environment that's not GNOME or MATE or Cinnamon or some other derivation thereof cough cough cough