Not everyone...I'll make out ok...

Touching straps...sounds kind of dirty.
I'm not too concerned that the jeep will fall off the back of the trailer, and I agree, the angle iron is not the best setup. That was before my trip to EJS this year, and I barely got the jeep and the trailer axles / new wiring prepped in time.
In fact, those used to be tail light guards. They are pretty beefy steel (3/8" I think), and welded quite securely to the channel iron on the back. I think I'd be more concerned with a strap breaking than those letting go. However, as with the angle iron up front, that may not a permanent setup. The straps actually do rub on the trailer a bit at the attachment points, so that is more of a concern to me than what I have them hooked to.
Note that every strap on my rig is brand new. The tranny is in park and the ebrake is engaged. How many times have you seen mostly worn out straps holding a rig on a trailer? This setup worked well for my trip.

