This close-up reveals the deteriorated state of the insulation. Not only is it hanging limply like cobwebs, but it is dotted with droplets of water. Among a few other things, water is fiberglass insulation's kryptonite.
The walls in this image are washed in efflorescence. It's clear by this photo alone that water easily creeps into the crawlspace walls.
The liner is trying its best, but its best just isn't good enough. The black liner is almost creme with dust, dirt, and water residue. The way that it is laying so haphazardly, wrinkles in abundance, makes it obvious that it is not a real barrier. It's been compromised.
This is one of the more frightening pictures in the bunch. What we have here are a few unprotected cords. What's scary is that they are readily exposed to potential hazards. They can be nicked by a rock or tripped over. Either way, they are in a bad place.