Homosexuality must be curable, it argues, since the Torah would not forbid something which is impossible to avoid.
Gangrene is not curable by current medical intervention once past a certain point in its progression, except by amputation.
But it remains a curable illness, and one that does not require course after course of antibiotics.
curable cur·a·ble (kyur'ə-bəl)
Capable of being cured or healed.