Just goes to show that its way easier to change technology than culture. Even Congresscritters are still thinking they're calling the shots. If NASA doesn't want to use SpaceX, they're free to do so. They can go with Boeing (some of the very people pointing fingers) or the Russians.

The "culture of safety" at NASA had more to do with a "culture of protecting funding lines" by ensuring that parts of the shuttle were done in important congressional districts.