The words that you quote from me are, in fact, my own. The explanation that followed comes from the Ramchal’s description of Olam Haba’a. He writes that there will be a physical world, but the physical dimension will be like the glass of a light bulb, where you barely even notice that it’s there.
By the way, it says of Eliyahu Hanavi, that he puts on a body when he enters this realm. Moshe Rabbeinu went to Shamaim only with is mind and soul; his body was on the mountain. Just like a character on a page can’t pick up the paper, there is simply no place for a body on a plane of existence that doesn’t support matter.
I’m heading now to go learn through the relevant passages in the Daas Utvunos, but you should go through the Derech Hashem. Deal?