Compositors choose to, because they need a part of it, logind, to talk to polkit, to gain the proper access privileges to do what needs to be done.<p>Basically, with Wayland the compositor&#x2F;Window Manager&#x2F;toolkit gets elevated to the same level as X11. Meaning that it has to do pretty much everything that X11 used to do for it.<p>The alternative to using logind+polkit is to run the DE&#x2F;WM&#x2F;compositor as root. Not something often talked about, as wayland is supposed to be the secure choice vs X11.<p>Frankly it feels like Linux is turning into some kind of marketing mess, where stuff is being presented as one thing but is in essence something quite different for those in the know.