Apple sold over 60 millions AirPods. Even if 0.01% is affected - thats 6,000 negative complaints for you. The page that is linked to the post has about 200 quoted complaints.
Most people won't post about it though. I had this exact issue (replaced the left airpod 2 weeks ago) but hadn't posted about it. Until this post, anyway!
Significantly more won’t post about their product working as expected.