There are many people that are complaining about this issue. But the total number of owners are way higher than the typical laptop. The MacBook Air M1 is allege

There are many people that are complaining about this issue. But the total number of owners are way higher than the typical laptop. The MacBook Air M1 is allegedly the world's best-selling laptop. I'm curious. How many screen cracks is too many, and should be considered a design/manufacturing defect? How is something like that determined?