> What exactly is wrong with a world where software is borderline disposable?

The quality of everything will become lower. There's no way to reliably capture thousands of business requirements and edge cases in every short-lived disposable iteration. The happy flows will probably mostly work.

We used to laugh at Eastern Europe and Soviet Union, and later China, because their knock-off products were, without exception, worse than ours. Now we're willingly doing the same to ourselves.