Body isn't essential to intelligence in its final form
The body is important to the development of intelligence (as Jean Piaget has shown) but not to its ultimate form. By the time a human reaches adulthood, the body is no longer essential—an adult quadriplegic is intelligent.
If the body were essential to intelligence, Dreyfus would have to claim that an adult quadriplegic is unintelligent. Because it is possible to model adult intelligence without simulating its development, it is possible to put intelligence in a computer without a body.
Zenon Pylyshyn (1974).