The answer to your question is simple. In fact, you dance around it in your review! The politics of reform are about navigating the disagreements in the Democratic coalition. Indeed! The point of the book is to present a positive vision of what a Democratic coalition focused around an agenda of demonstrated competency would look like and accomplish. The book is about the persuasive effort.
It doesn't seem plausible that you'd be so unfamiliar with Klein that you didn't know he records one of the most popular policy-driven shows in the country.
As I stated already, the vision is incoherent. It's fine to cherrypick specific anecdotes as examples of competent governance. But if, for example, one of the stories is about how outsourcing large infrastructure projects led to its demise while doing the same for a vaccine logistics project was the cause of its success, this isn't really much of a vision at all, is it?
You say the point is to show what "an agenda of demonstrated competency would look like and accomplish." So where is that agenda?
If that's true, then we can shed regulations, speed the process of government, and make it more effective at actually doing things.
It might be difficult to tell which regulations are causing problems, or which are needless, or maybe that's not the point of the book; but criticizing the book for not pre-identifying exactly which regulations need to end seems overly demanding: we first need to agree that there are needless regulations that slow progress. If the book helps us reach that conclusion, it's served a purpose.
Also, as a small nit: "even a positive-sum world contains winners and losers." That needs cites I think. I'm sure there's someone in the U.S. who is worse off than a 15th century peasant, but there are precious few of them, too few to use that phrase to describe them.
The problem is getting that same level of agreement about specific regulations - or, failing that, making a strong case for a specific reason why a regulation that many people think is necessary and good is actually bad. But Klein and Thompson, for the most part, avoid doing this.
The review draws a comparison between Abundance and Marc Andreesen's "Time To Build" essay, for... no discernible reason. It then points out that pmarca was ultimately hypocritical about building (he opposed development in his own town, of Atherton). I don't understand what that has to do with anything. Klein is a YIMBY. So am I. I spent my spare time working to clear the way for multifamily housing to get built right next door to my own. What the fuck do I care what pmarca did?
I think that, to understand this review, you have to understand the internal dynamics of the Democratic coalition. Progressives (the left of the party) hate Klein, and, for reasons passing understanding, the YIMBY movement writ large. The progressives have a prescription for rehabilitating the national coalition: massive public spending programs and single-payer health care. Klein and Thompson advocate for a different strategy: building a track record of demonstrated competence, and stanching/reversing the outflow of residents from blue states to red states that actually build housing. That there might be a strategy that doesn't involve a progressive takeover of the state and national parties is a problem for the movement; hence: stuff like this.
You'll see the same thing happening with Matt Breunig and Malcolm Harris' reviews, posted upthread.
As I state clearly in the review, I share Klein and Thompson's view of the housing issue and I called that part the strongest section of the book.
My point is that what the book calls "abundance" is an incoherent mishmash of ideologically incoherent anecdotes. It's not a policy framework and it's not an agenda. So what is it?