Eventually most people figure things out and make the most of it in adulthood, but it definitely makes for teenage/young adult identity crises that monocultural people don’t have to deal with.
The former group has more issues fitting in, while the latter seem to be just fine. Certainly plenty of people in Europe speak more than one language natively and don’t feel like they lack a home. And it’s not like there is an actual country where only deaf people exist. So the idea of avoiding bilingualism seems totally absurd to me, especially when probably the majority of the world has some level of bilingualism by default.
I will add that most people do not understand how divided the Deaf Community is about Coclear Implants. Least of all what you hear is not like what we would hear. It sounds like a robotic voice.
https://journals.sagepub.com/stoken/rbtfl/3WBTL0klZP48Y/full
I think you're missing the point entirely.
There are many different cultures in the US. Some are more similar than others. There is a Chinese culture in the US - as someone not part of it I'm content to call it one, but I'm sure those in it know of differences that I cannot see.