The policy has never been consistent, and has varied by Administration and even by the Service Secretaries within an Administration. Napoleon McCallum (Class of 85) was a fantastic running back, but he had to serve his 5 years before starting a career with the Raiders. Robinson (Class of 87) was a bit different. He entered the Academy below the maximum height and grew after the fact.
Naval ships, especially subs, are not set up for 7 foot, 1 inch sailors. Ditto fighter planes.
Not really set up for pregnant sailors either, but that is a horse of a different color.