Why do people keep saying such things regarding previews and demos? He is not complaining about a bug. Nor does he complain about a not ready for primetime fea

Why do people keep saying such things regarding previews and demos? He is not complaining about a bug. Nor does he complain about a not ready for primetime feature in some early development version. Those are expected. He is complaining about how a feature is implemented. Features such as this, rarely, if ever, change between preview/demo and final release. If it does change, it will be mostly because of the outcry, not because it was supposed to change in the final all along.