You know, I really would like for you to stop referring to ears in which AirPods don't fit nicely as "abnormal ears". I suspect a sizeable minority of users don't have a super snug fit from these and their ears are perfectly normal. Last I checked, people come in all shapes and sizes and are "normal". The AirPods optimally fit in a certain size ear canal and for everyone else, they're a little off. For some they fall out, for others it just hurts to have them in for any extended period.
Exactly majority of ears they work perfect and the ministry group of people with abnormal ears they do not. No need to be offended by the word “abnormal” just because we all get offended by anything these days...smh. Lots of people have abnormal eyes and therefore wear glasses and you don’t seem them whining.