I use slides like this every once in a while, and they are, when used correctly, very effective. The point of a "spaghetti diagram" is to illustrate the complexity of a situation, not to explain it.
Participants should see a slide like this and think "Good Lord, that's complicated!" when a speaker wants
to drive home a point like "with better standards, we can simplify this a bit," or "this is far more complex than a simple slide can possibly convey, please be aware that I'm deliberately simplifying."
It helps the audience appreciate the depth of a situation without requiring that they understand every nuance - something I find useful when dealing with executives or nontechnical folks, and something I'd guess that the military often needs to do with the media - or us, for that matter.