No, the "xorg keylogger" issue has nothing to do with the low level stuff (evdev is how the windowing system gets info from the kernel, udev is how the windowin

No, the "xorg keylogger" issue has nothing to do with the low level stuff (evdev is how the windowing system gets info from the kernel, udev is how the windowing system enumerates devices and gets hotplug notifications). The "xorg keylogger" issue is a fundamental property of the X11 protocol, it's between the server and clients — all clients get enormous amounts of access to all kinds of global state over the X11 socket.