I don’t see the new emphasis on stormwater as a changing paradigm. I see it as a society that has become poorer looking to the next-lowest-entropy source of water. This is the behavior of people who have lost wealth (high elevation snowpack) and on top of that, have to spend wealth to make the new higher-entropy source act like the old low-entropy source (by gathering and cleaning distributed dirtied water). Climate change will cost and cost and cost.
You know, if the AroundDeltaWaterGo doesn’t end up happening, the State Water Contractors will have ended up transferring a few hundred million dollars to slightly lefty urban environmental consultants for no tangible benefit. They will have underwritten some environmental research in the Delta in the process. Thank you, Westlands!