They definitely didn't account for different populations' ears when they designed the EarPods - I've never been able to wear them, and I've heard many similar anecdotes from non-Westerners, and from some Westerners as well. The first thing I noticed about the AirPod Pros is that they'd probably fit in my ears, and I wondered what possessed Apple to change the design after years of insisting that EarPods fit the vast majority of people's ears.