It is true, across a bunch of different metrics I listed. Also an embarrassing amount of privilege escalation bugs.
I mean I don't know what you'd accept as evidence that it wasn't working well, but if you get an idea of what could actually change your mind on this let me know. I feel like I've more than documented the issues I've personally had with it.
I don't put your experience into question, I'm stating that I never replicated it.
I have 5 Linux machines and systemd made my life little better on all of them due to using the same commands and not having to pay attention to distro differences. I periodically backup logs and configs, I scan for errors and post them in private channels, I'm able to monitor if a service fell on its face, I have a small naive resource meter, and a few others.
I'm not an advanced sysadmin by any meaning of the word, but I know enough to make my life easier. Maybe you're using your machines in a very different manner that make systemd crap the bed? I'm merely saying that it doesn't do that for me.