This is not necessarily in opposition to what TFA states: that programming is about knowledge engineering. It just happens that knowledge flows through user stories and code. This might work well or not so well for your team, and there's nothing to fix here. Managers should be aware, though, that this means you no longer have a project, but a line organization put up indefinitely, and where when the teams is disbanded, no "product" as such does remain; nor would it be possible to hand-over the "project" to an offshore team.