Sooooo....
The wiring job looks shady, but the wire also looks gray in color, which could mean that its UHF wire and UHF is rated for direct burial/outdoor exposure. Yes, you could argue that it wasn't properly supported, but a photo of only one small section doesn't tell the whole story. The electrical box is an outdoor rated receptacle with a weatherproof cover. Its not the one I would have chosen, but I suppose it works. Perhaps it should be mounted higher, but codes vary by state so who are we to judge? As Americans, we often forget to look beyond our little world. Travel to other countries, yes even modern ones, and you're likely to see exposed hook-loop type wiring wrapped on insulators mounted under the eaves of houses.
The real problem here is that the OP left an adapter (with 2 exposed electrical connections) on the ground, exposed to weather, in a pile of leaves. Let's not try to make more out of this than what's there.