I am surprised to hear your experience here. Many of my friends have them and only one has ever mentioned a fit issue. He bought larger tips and they now fit perfectly apparently.

Researching I can indeed see such products exist, although given Apple appear to be selling over 100 million pairs a year[0] (also surprising to me!), I suspect your estimate is inflated. Note this is over 300,000 pairs per day.

Anecdotally, I see people with Airpods daily but have not once ever seen hooks on them. Maybe there's a cultural element at play?

0. https://en.wikipedia.org/wiki/AirPods#Sales