You can tell it's written by real Linux users because the landing page UX doesn't make it immediately obvious where to even start reading.

My journey was: Start off by clicking LFS among the links, and then "Read online" in the sidebar, and then being lost. I see a header, "Current Stable" but I can't see the link to the actual book. I only see the errata, the security advisory and a link labelled... stable LFS systemd? Maybe it's that one? Yes, yes it is.

it's like their brain is unaware of the concept of a timeline

It is indeed glorious.

... At the top? You're expected to read all of it! :)

[dead]

Took me half a second to realize I would probably start with "LFS :: Linux From Scratch is the main book, the base from which all other projects are derived."

You mean the link to a page which _also_ doesn't have the main book?