So the argument is that Jesus must eat up in heaven because he ate after the ressurection and probably after the glorification as well. Well no. Jesus can do whatever he wants. Atheists hate this fundamental rule. But there is more. God and angels visited Abraham and ate ☺️. As the heavenly existence is incorruptible, it can not be corrupted by thirst or starvation. Nowhere are we told God and the angels dine in heaven, the logical assumption is that they were simply being nice to Abraham ☺️.
But we need not be shy or embarassed about poop. It is natural and certainly part of our corruptible nature. As for the incorruptible nature, lifesustaining means such as eating and pooping are not likely ☺️