Don't get obsessed with labels, most of us survive just fine.
It's true for some folks, but I sought this diagnosis because it hasn't been true for me. Though I guess it depends on what you mean by "survive just fine." I've been on welfare since 2009, can't seem to hold down a job, and had to go back to voc rehab after my first round because I couldn't manage the career I'd chosen. I know there are those who are employed and do well enough. I'm just not one of them, and this label helps contextualize the challenge.
On the other hand, maybe "survive just fine" means "still living", and if that's the case, then you're correct, me and my kids are still living.
Also, when your kids aren't doing well in school and are terrified of "adulting", you want to do what's best to help them. I gather I would have a very different perspective if I myself could maintain steady work and not have to rely on public assistance. The label is an important step forward, and will take on different meaning as all of us grow into it.
That said, I know that the autistic community has varying opinions on whether or not autism is an identity or a condition. I welcome discussion about that. For my part, I find it to be more of an identity, but this is a view that sort of crept up on me, I guess, the one that seemed to "fit" the best.
When my oldest came out as trans, all things trans dominated the conversation for a while. It's a similar situation here. Same when my ex got diagnosed with cancer. There's a period of letting it "sink in" where the label seems to dominate the conversation before it dies down a bit, settles. I doubt I'll have the urge to assert my identity constantly to everyone all the time forever. No, that's just one stage of accepting the label. Later, it'll sort of blend into the background, I expect, coming forward occasionally as the situation warrants.