The actual best decision would be to stick with his principles and make LFS be sysvinit-only instead, with zero fucks given about Gnome/KDE if they refuse to play ball.

I for one will not be strong armed into systemd or any other tech. If KDE makes it impossible for me to run without systemd, it goes into the trash bin. I will just install Trinity (KDE3) and be done with it. (Gnome deserves no consideration whatsoever.)