Yes, Apple does. I got my 16 GB Air at the Apple Store two hours after I ordered. It was in stock. Amazing!
(I’m glad you got the model you wanted so quickly).
It's an open secret with us Mac nerdsl that Apple tends to have low stock of an “ultimate model” for every product line; which they do not advertise on the website, and often if you go into the store and ask, employees will deny it because they don't even know about it themselves.
In the case of the MacBook Air, the ultimate model they carry is a 10c GPU, 16 GB RAM, 1 TB model that costs $1800. But that is not the official models they provide retail partners, meaning if you go to Costco, Amazon, Best Buy, and other retail centers around the world—where a majority of Macs are sold—you're always going to find these two models:
- 8 GB RAM, 256 GB storage
- 8 GB RAM, 512 GB storage
And it's those two models that get discounted $200 off during sales, which are quite frequent.
(Sometimes Best Buy will have a 16 GB model and it will be on sale, but its rare and very specific, like only a 15-inch M2 Air with 16/1TB and it has to be Midnight Blue colored)
My point stands—you can get a base model M2 Air for $200 off but if you want to spec it up to 16 GB, you're usually going to have to visit Apple.com and pay an additional $200 which means you're paying $400 more than anyone else for a simple addition of 8 GB RAM that costs Apple only $3 or whatever; and that feels foolish to do.