What happens in practice seems different, the USA seems more 'inclusive' of others who don't sign, but in the UK that isn't usually the case. Deaf tend to segregate 'like with like' and don't really socialise with those who don't sign on the simple grounds they say they cannot follow.
End of discussion, it's very frustrating. There is an area of ' sign purism' that would rather not include themselves with non-signers as well, these are the people who say you are not deaf enough, as being deaf means something different to them than a profound loss of hearing. The ability or choice to sign (Or not to), is not really understood it usually results in a parting of the ways or annoyance, who makes effort is an issue signers don't unless you attempt to sign as well. But they still won't adapt to what you are using.
Nothing further then happens. Younger deaf are more outgoing and willing to adapt, but it seems to tail off as you get older. So that is not really accepting choice its saying you won't adapt and I cannot in most part. Everyone signed on the video, without being negative I would think, this is not to do with me as a deaf person. I don't do that I use something else, its a choice then do I attempt to integrate with the signer? or stick to the hearing world I prefer to, and use whatever helps with that?
The culture means nothing to me or the social area because my own choice was to stay with what I knew. It seems the background of these deaf follows the same approach they stick with people and systems they know. The 'You aren't deaf enough' thing is an extreme deaf attempt to 'defend' sign language against all other formats, choice-based or not so inclusion and acceptance are the real victims.