Why are you comparing in-ear earbuds to over-ear headphones?

The battery on the AirPods is 10 times smaller. So you would have to replace it 10 times to break even.

why would I want a replaceable battery? My airpods have been working fine for 6 years now. Isn't THAT better for the environment?

Those are some weird looking in ear earphones

What % of people replace a battery over the lifespan of an item? Does the increased complexity and size of the unit make up for the slightly longer lifespan? What makes it "better" for the environment, exactly when it all ends up in a landfill after 5 years anyway?