Texas (like many other states) is full of installs like this. I have walked away from a couple over the years where the original install was similar and I refused to take responsibility unless they allowed me to do it properly. I've seen speakers hung with baling wire, nylon rope, jack chain, and even zip cord, using the handles, screw eyes, lag bolts, and once wrapped around the screws holding the corner hardware in place. I wish I could say these were all in the rural areas where there are no inspectors or standards, but at least one was in a major school district. Thankfully that one was actually corrected after i pointed out the poor rigging.