>The second reason for dropping System V is that packages like GNOME and soon KDE's Plasma are building in requirements that require capabilities in systemd

Do people who really uses LFS even want GNOME or KDE on their system ?

I would think people who use LFS are doing it for the learning experience and not necessarily for a daily driver OS.

Maybe? When I did LFS/BLFS I opted for an i3-gaps setup with a compositor and some other eye candy, and had a lot of fun tinkering. I suppose some folks might want the experience of building an entire DE from source, but that seems like a bit much.