And then what?

Nobody will accommodates you.

Suing for ADA violations will cost $20k just for a retainer. And then it's a gamble if you win or not.

And the US government wants to aggregate us into a list for who knows what reason.

In lieu of repeating myself: https://news.ycombinator.com/item?id=46178777

Mental health, like physical health, requires action on your part. If the only thing you're seeking from a diagnosis is accommodations from others, then yeah, you're probably going to be disappointed.