Plus that project in particular was more about destroying things exponentially faster, than it actually was about building things somewhat faster.

The faster building process was achieved in a relatively linear way at best, and the only thing built was a tool for destruction, no comparable efforts were made toward building things of lasting value which would need to more than compensate or the tech effort is a net loss.

Or, after destruction is induced, a recovery can not be made since the time required for building has the time it took for destruction in the denominator.