All of those links are outdated by several years - it's still zero tolerance policy, and has been much easier to enforce with the advances in server monitoring these days.
It's not fake news, but it's skewed towards the Pentagon - a "DoD affiliate" is much larger than than the 25K employees in the building daily.
That would be 1 in 5 guilty - no, that's not the case - I'm sure there's a few, there usually is in any Govt work force.
These investigations do not get swept away as the article implies, they will catch up with the guilty in the end.