So, all the fuzz about Wayland security and how it is good security to kill window managers at will... comes out totally void.
Yet the most common way to denigrate Xorg is to assert that Xorg is basically a keylogger. Which might be true, but as this post shows just switching to Wayland doesn't offer any additional protection under the key-logging point of view.
You might combine a sandboxing technique with Xorg too, by the way.