While that certainly has been true for the majority of the last two years - rpi's in pretty much all skus have been back in stock for a few months now - to the point that even digikey has many of the skus in bulk stock
Oh, thanks! I've been watching that religiously and while you are correct the other Pi's have been available for a couple months now, the 2Ws have been absent. I haven't checked in a couple weeks now, I'm happy to see they are finally in stock!
Edit: it's a bit premature. Only Chicago Distributors have them in stock at the moment and they are limiting the orders to 1, which is frustrating because I only need 2.
See: https://rpilocator.com/
As for Zero W 2s: In stock right now: https://chicagodist.com/products/raspberry-pi-zero-2