Where is the hostility coming from? First of all I am not sure why you believe that if I insist on not knotting my cordelette then "nothing anyone can say is going to do much good." I am asking about the stability and safety of a knot. If you do not have that knowledge then thanks anyways. Secondly, if you want an example, for instance I need to tie the cordelete around a large rock formation. If the cordelete is in a loop it would take more than double the amount of rope to tie it around as opposed to it being open. I know I might be the beginner but i dont need you arrogant "benefit of the doubt".
If you've convinced yourself that you need the flexibility to untie your cordelette so that you can use it to put a bowline around a "fixed point," then nothing anyone can say is going to do much good.
My point was that you don't need this "flexibility" at all (generations of highly experienced climbers have climbed their entire careers without ever once having to do this) and so you might as well just knot your cordelette with a strong secure knot and cut it off if an emergency arises and you need your cordelette for rappel slings, for example.
But to give you the benefit of the doubt, perhaps you'd like to post a picture of a situation that requires you to untie the cordelette and then retie it with a bowline?