By simple statistics, most people are, on average, about average. This is true for any population large enough. I don't buy your assertion that C++ developers are better than Java developers, and all else being equal, bad Java code doesn't blow up in as destructive a way as bad C++ code.

Deliberately keeping a working environment hazardous and unsafe doesn't give you a breed of superhumans that never let accidents happen, it just leads to a lot of unnecessary accidents.