Yeah, but some of us like pf and systemd. It's so confusing.
I kid. Sort of. Systemd is a great startup launcher -- maybe even an improvement over rc.d. Although I confess I've never had any issues with rc.d. Systemd can be quicker, which is nice, but 15 seconds saved on a server that reboots very infrequently is not super interesting. More importantly, the rest of systemd is less compelling.
However, the first-party docs are really quite good. Considering that some blog posts are written to compensate for a lack of docs, I wonder if there’s a causal relation there.