''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.''
Weird. If I weren't a sicko and had OBS Studio installed on my multipurpose box [0] I'd not have dbus installed on it.
dbus is generally optional; not that many packages require it. [1]
[0] Two of its several purposes are video transcoding and file serving.
[1] This is another area where Gentoo Linux is (sadly) one of the absolute best Linux distros out there.