what is significant about the faults gullivers houyhnhnm master find with gullivers physical condition

The Houyhnhnm Master finds Gulliver is even less suited for survival than the Yahoos of his island. He points out Gulliver's pale, his useless nails (can't dig or protect himself) his soft feet, and need for clothes. Although the Houyhnhnm Master finds Gulliver more sophisticated than yahoos, he finds Gulliver physically inferior.