Coming from my own personal experience of adapting to and living in several cultures throughout my life, I would like to address the issue of defining the difference between Deaf Culture and Deafhood, IMO.
Deaf Culture defines a distinctive identity, perspective and way of living for D/dhh people. Deafhood is the means by which you embrace that way of living and adapt to it, for many it is a journey. If dhh people are finding ways to adapt to the hearing world and fit in there, then they are not embracing Deafhood or the Deaf Culture. As Deafcaroline mentioned: Whether someone has mild, moderate, severe, or profound ranges, we all face varing degrees of similar challenges in life. The question is: Which way of living do you choose to adapt to? Those who choose the 'big D' way, are no less able to interact with the hearing society - they just view things from a different perspective of themselves and life in general around them, same as any other distinctive culture around the world. I disagree with the concept that Deafhood is colonizing, it is impossible for it to be so, for it is worldwide, spanning every country.