''As a personal note, I do not like this decision. To me LFS is about learning how a system works. Understanding the boot process is a big part of that. systemd is about 1678 "C" files plus many data files. System V is "22" C files plus about 50 short bash scripts and data files. Yes, systemd provides a lot of capabilities, but we will be losing some things I consider important.
However, the decision needs to be made.''
I think the *BSD are also good, at least from an educational standpoint, with their relative simplicity and low system requirements. Since there is a lot of integration making a from scratch distro might take less material, but it could be supplemented with more in depth/sysadmin exploration.
When I was building the initial version of my distro starting from a Linux Mint computer, one time I accidentally double-mounted the virtual filesystems (/tmp, /run, /proc, etc), on the target volume as my script was too primitive and didn't check the mounts first.
Exactly 60 seconds later, the whole system crashed.
Later I accidentally did this again, except this time immediately caught the problem and undid it. No matter--systemd still crashed 60 seconds later anyhow.
Or like the bug that was revealed a while back where the firmware EEPROM was writable by default in /sys or wherever it was, resulting in somebody's firmware getting overwritten and the system bricked. lol
That's the systemd life for you, in a nutshell. That sort of thing times a thousand. Not all at once, mind you--it will just take a nibble out of you here and there on and off until the end of time. After a while it will straight up fuck you, guaranteed. Which is exactly what it was designed to do.
Same with anything "Linux Puttering" touches. The guy who is now officially a Microsoft employee, as people were saying he really was all along.