When you choose BSD, many common Linux frustrations evaporate. :)
There's a culture of documentation in BSD which exceeds Linux. There's a larger commercial/reputational market for a Linux book of course, but that attracts different writers, who are often not as good/knowledgeable/motivated/dedicated/etc as the BSD documentation writers.
Additionally, BSD has a culture of simplicity and consistency which is entirely absent in Linux. This makes documentation more clear and much more durable.
I'm joking of course, but that is a bit how I always feel when trying BSD. It reminds me a lot of Linux in the 90s, plus its development appears kind of glacial compared to Linux.
(I've used both FreeBSD and NetBSD in the past, this is not a baseless claim)
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.