Seems more likely that the opposite would be true. Small group of people, with zero-external oversight/review. They are far more likely to miss something. I

Seems more likely that the opposite would be true. Small group of people, with zero-external oversight/review. They are far more likely to miss something. I guess the fact that the hardware set is very tightly controlled helps, some, but still. I'm not at all claiming that Open Source software doesn't have bugs - it obviously does. But you have a much larger test group, and many more people reviewing the code (usually).