That's the culture. The SV innovation is that startups have gestalt views of things not a "management made it like this so I am unable to operate". The bureaucracy and the machinery that supports it
is the government culture. People who don't understand this, often don't understand the natural offshoots that come from it: blameless post-mortems, prioritizing falsification, unlimited paid vacation, etc. These all work because the people participating have the culture.
The SV startup culture is a full-spectrum ownership thing. If your executive team isn't aiming at the right direction, you tell them that, and if you lose faith in the future as a result you go elsewhere. The executive team always relinquishes its power over you in order to maximize your effectiveness because that's the only thing that matters.
Government culture is different. It optimizes in a different constraint space. There has to be visibly equitable hiring, the needs of political expediency require things like "heads to roll", regression is more dangerous than lack of progression, etc. Because of this, government organizations operate differently. They're not inefficient. They're just optimizing to different constraints and they're incredible at doing so. I would hypothesize that you cannot retain SV startup culture at the government for any appreciable amount of time because of the constraint space - much of which is the result of natural law.