Jesus could do anything the Father gave Him permission to do, but His abilities are not in question here. It’s His words. If we take your selected passage here literally we also must say he is is a sun, a gate and a piece of bread. He was merely explaining how the elements of the passover meal were given as an example of His mission. I see this as nothing but busy work.
Because you ignore the words of Christ. A big difference between "I am" "Is Like" and IS