I fully agree; a neural network can be continuously trained. Software can continuously perform A/B testing and change its mind when its current procedure proves inefficient.

The human mind tends to be set in its ways.

But it doesn't. Current systems do not do this, but people trust in them because machine learning is "more accurate", somehow. It's a huge problem managing expectations around a black box. Online training does not happen in any form at scale. These "fair" systems are, by and large, nonsense.