I think "Austrian understanding" is misrepresented here. It makes sense for non-fungible goods. However, if we talk about relatively well dispersed, uniform and scarce resources, some sort of "stock" and market price as information about "flow" should be enough to make judgement if fungible good may be monetized eventually.

I don't think that it is right to talk about "stock2flow model" but I lean to understanding of "stock2flow" as a framework with sort of naive formulas. And Austrians were always against any math.