Not arguing here. But just want to point out that disability subculture usually arises as a survival response in the face of discrimination and segregation. Everyone has a need for community and a sense of belonging. When broad hegemonic culture rejects you and your presence, belonging is found in the one distinctive feature that is the cause for the rejection and the source of cohesion with your peers. See also gay subculture as a response to homophobia, US black culture as a response to racism, feminist sorority subculture in response to misogyny, etc. So it is not rare to see disability subculture as a response to ableism. These communities are very important for security and preservation of individuals. Just as everywhere else, security is always a trade-off with something else.