integration of machines within the human body will ultimately lead to loss of free will,

This is not necissarily true. Not all machine parts are programmable, just electronic components. Not all electronicl components either! The key is to make sure the parts remain directly controlled by the body they're attached to. There's no evidence to suggest this will necisarily lead to a

sterile society devoid of human spirit

This is sort of just fearmongering and failing to understand technology before deamonizing it.