He chose “Run XEX” just to see.
On the Xbox 360, XeXMenu required a "JTAG" or "RGH" modded console. As of now, there is no public, equivalent hardware exploit for the Xbox One that allows for the execution of unsigned .xex files at the system level. Because of this, the original XeXMenu application cannot run on an Xbox One. The Modern Alternative: Developer Mode xex menu xbox one