IPv6 existence is questioned not because people fail to configure it. It’s because they do not understand the problems it solves. Those problems are so large they’re invisible at the individual human scale. You either know them (which is not a secret) or invent superficial charges against the design.
No. People fail to configure it. Then start to question why this piece of garbage exist.
It doesn't matter what problems it supposed to solve if it doesn't work.