The military's size, scope, and mission are unique. You need top-down control, because otherwise most folks won't decide to run up a hill into a machine gun on their own. That mission focus (do stuff with force), cascades into the supporting services.

And the Air Force is not the DoD. While, technically, the individual branches of the US military fall under the DoD, they all have very different organizational cultures, and the DoD has staff and culture of its own.

I won't tell you what falls within the scope of this discussion or not, but I can tell you why they don't add a lot of value to it either.

It's already quite hard to somewhat objectively discuss whether a business company is dysfunctional, in part, or not at all, and what are the reasons for that.

It's almost entirely useless to attempt to have that discussion about government. Because politics. Because people root for their home team. Because people are inclined to dismiss the other team's ideas even when they're real good. If I told you the US Government is dysfunctional, someone would counter that I'm not American and I should see my own government. If we move past that and we got into the details of why things are not working properly, invariably Americans will start quoting bits of the constitution, bill of rights and foundling fathers at each other (and from there on it just becomes religion to me).

Discussing whether the function of Military organisation is working properly is even more difficult. In addition to the above problems, there's also hazing and indoctrination, which are incredibly strong psychological forces (without those, like said, people won't run into their deaths without question). And it pretty much divides the crowd in two slices, those "outside" that have no idea how it really works, and those that have been "inside" who are unable to disconnect the indoctrination bits from forming an objective judgement about how well the organisation functions and how that comes to be.

Certainly, discussing businesses has similar problems, but this just amps up the personal emotion factor to eleven. Also one of the reasons why the businesses were kept anonymous in the featured article.

There may be awesome companies out there where anyone is empowered to just go fix some practice that's not productive, no matter where they are in the org chart, but those companies are few and far between. I'd love to see one.

One thing I would consider doing, if I ever start my own company or rise high enough up in someone else's company to implement this, is to give every single employee some sort of discretionary budget to spend on things that make the workplace better. The more experienced and trusted you are, the bigger of a budget you get. I think this would go a long way in fighting the learned helplessness dynamic.

20% is not specifically for "improving the organisation" of course. It's most famous on the outside for the new products it led to, like Gmail. But actually most 20% projects were small internal things intended to smooth the rough edges off a particular tool or process, or to improve the company in some way. If the particular bee in your bonnet was a type of bug that cropped up frequently in other people's software, making a linter to spot it and driving adoption through the organisation would be a good 20% project, for instance.

However, this is not to say that in regular administration there isn't still a lot of de facto trust in the hierarchy. I think unbounded hierarchy is generally one of those memes that people grow up taking for granted as something that just works with any layer count. In some ways, it's a self-reinforcing thing - if you climbed ranks for 10 years, you don't want to see the system change and your "sunk cost" go away.

[edit: clarified sentence]

That book made it into four different reading lists from various branches of the military (USMC, USAF, Army, and a chair of the House Armed Svcs Committee). That's encouraging in that at least they're aware that his ideas/approaches were productive.