Interesting, I didn't know that. But if you look at it purely from a cost perspective, it's at least a lot cheaper have the airpods swapped for 2x $49 when the battery dies, compared to buying a new pair with case for $199.
Obviously replaceable batteries would be even better. How do other brands of wireless earbuds of the same size fare in this regard?
[1]https://www.ifixit.com/Teardown/AirPods+Teardown/75578