Or rather die than come up with good metaphors to attack his shitty strawman. He knows his Everest metaphor is shit -- some summiters are blind or double amputees, and the amount of equipment ableds need to climb everest is *evidence* of the social model -- he backpedals halfway through, but he makes the metaphor anyway! NASA is literally trying to figure out how to design space travel for disabled astronauts, which he'd know if he'd typed two words into google.
He's just... being a cunt.