When you square off, you begin to muscle the bow, and use less bone structure to hold the shot on target. You will be less stable, expecially on shots you have to create and manufacture in the field, You will tire quicker, and you will have miss directed energy, and possibly create bow torque and most likely too little back tension....and even a shoorter draw length.
In other words,.....what you stated is the opposite of what I believe. I believe that proper alignment is the foundation of shot, and the more solid the foundation, the more solid the shot. That foundation can be rotated right or left, ....or bent up or down, and the foundation is still solid. And is certainly is not unstable.
Bow shooting position is not like the position of shooting a pistol or fighting.
Well, that's my 2 cents.