AirPods have always been hard to get, but it's getting ridiculous! We just went to China to visit in-laws and had to bring some Apple goodies (a tradition of sorts for us) - this year it was to be AirPods. Went to 2 Apple stores (TWICE!) but didn't have any!. Then we tried Target - nada - and a couple Walmarts. We finally got lucky because the person at the second Walmart was on the phone with a dude in a third and asked them for us. Turned out that one had 5 pairs left. We snarfed up 3.
My AirPods are going on 2 years now and I've definitely noticed reduced charge on the pods - I barely get an hour out of them when, I think, it used to be 2. Might just have to bequeath them to my daughter once the new ones come out