I can only operate off the information available to me, just as the rest of us have to. I can't see inside your thoughts, so if there is a misunderstanding there, it's because you used too little information and improper language.

Also the person did not say elephants can't run, you keep coming back to that. They clearly stated that terms of movement such as trotting/cantor/galloping only refer to the biomechanics. Elephants can never move like that due to their size and physiology, regardless of how it might look when they are moving their fastest. The article they linked even says exactly that, they aren't running because all feet are not leaving the ground.

Furthermore it states how when moving their Center of Mass does not vertically change at speed. As a bipedal animal, I am sure you can recognize how much your mass moves up and down as you run and walk, headbob. That Mass in the elephant not moving vertically keeps them trapped to the ground, so by definition they can not run/trot/canter/gallop