Whatever the merits or demerits of 'marvelous human experiences' are from the point of view of production and consumption, the OP's conclusion leaves out the important point that Alexander's 'rationalization of forces that define a problem' produces designs that come closer to solving real-life problems (even in production and consumption) than simply putting attractive lipstick on an economic utility pig. If production isn't solving real human problems, consumers will go elsewhere.
> If production isn't solving real human problems, consumers will go elsewhere.
of course but that's well within the scope of the whole paradigm (as opposed to how it is originally phrased it in relation to a loss of "marvelous human experiences"): if i use a bad tool to solve my customer's problems in an unsatisfactory way then my customers will no longer be my customers (assuming the all knowing guiding hand of the free market). so there's no new observation whatsoever in OP.