@inthehands I suspect that answering the question "why is it the _what_, _how_, and _why_ of development are at odds" heads straight into the way human systems get stuck in bad states.
Having the words for the intentions, expectations, and qualities of the work can help people at least not talk past each other.
The field in practice has shipped a million leaky prototypes that demo'ed well. Time to market? Time to capture funders' attention? Those bring their own pressures and problems.
I think of Kingsbury's Jepsen project as a model of asking whether the "what" was actually delivered by testing the fundamentals.