This is precisely the chapter I am referring to. It does cover the basics, assuredly, but as noted in your previous post, does lack some rather important environment variables -- which if not properly defined -- that will send users on a wild goose-chase. Particularly for the newbie users of Wayland on FreeBSD. The angle here being stumbling blocks to adoption of Wayland, if Wayland is indeed the way to go into the future of desktop interfacing.
Kudos to the Arch Linux wiki, as that is where I've mostly gone to for hints on how to get all things Wayland/sway/hyprland (even Xorg!) working nicely on FreeBSD. We need a bit more of that in our Handbook too. Granted us nerds will bother to sit down & look at specifics of source code / GUI toolkits to manage our way to getting things working... but this is not the right way to go for all new users.