Also, we are all AFAICT extrapolating from not a lot of data. I have a few deaf friends, but they are all adults without children. I’ve seen a documentary and have taken some ASL classes (and I’m pretty much shit at all languages, soak in the irony). That’s my total net exposure to the whole deaf community. I have some autistic friends, but they are all high functioning/asperger’s end of the spectrum. And I’ve seen Rain Man, and have seen a few episodes of Parenthood. That’s about it for autism and me. It’s actually been great that Jeebus has been here for this discussion, I just wish we didn’t have to make arguments-by-proxy for the deaf.
EDIT: Re: other stuff. I often use “you” conversationally, like “You’re here today, you’re gone tomorrow”, when I don’t mean literally you, but just your generic person. “One” is too stuffy. “They” too impersonal, sometimes.
And when ASL is your first language, and then you learn English, then English is your second language, with all the complexities of a second language (let me assure you, the grammar is way different, because I think ASL is derived from French–so it may actually be easier to learn French as your–dang, I did it again!–second language) Your second language could even be another sign language, which wouldn’t necessarily be much easier.