Wayland as a just protocol... Isn't that the same argument they used when it shipped without copy/paste or a screensaver?
In the metaphor of a web server and a web browser, Wayland would be the HTTP specification. What you're usually interested in is what server you're running, e.g. GNOME's Mutter, KDE's Kwin, sway, niri, or what client you're running, e.g. Gtk4, Qt6, etc.