I think that's because most of the people doing the work are contractors. Not because of some notion of contractors being less secure/loyal/honest/organized than gov employees.

For one federal organization I work for literally everyone I work with and talk to at all levels seems to be a contractor except for a couple people. the ratio is at least 20:1 contractors to federal employees. As for why this is, it's mostly related to the reasons I mentioned in my wall of text