I remember of this long article, that, technically demonstrates that systemd is badly designed, as you said: http://blog.darknedgy.net/technology/2015/10/11/0/
Didn't read it entirely at the time as it dives really fast into the technical stuff and provides an ever growing flow of informations that you have to absorb to understand it correctly. Seeing people like you being so concerned with systemd makes me inclined to re-read it fully.
And why FreeBSD and not voidlinux or something in this fashion ? More secure ? More mature ? Will never be subject to such issues ?