All these security arguments are pure figments of your imagination. They are not based in reality at all. Wayland is trying to do less than X11. The things you

All these security arguments are pure figments of your imagination. They are not based in reality at all. Wayland is trying to do less than X11. The things you mention are not solved at the display protocol level on any platform but X11. Your security strawman never comes in to play.