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Since this isn't anything like what the sport of hang gliding does look like, we might conclude that hang gliding, as it is presently practiced, is an unreasonably unsafe activity practiced by people who lack a proper and reasonable regard for their personal safety. In other words, we might conclude that the "uninformed public" has been right about hang gliding all along.
If you don't like that conclusion, I'm pretty sure you're not going to like any of the coming ones either. But let's first ask this question: If we wanted to address this problem of bad decisions being reinforced because they look like good decisions, how would we do it? The answer is, we need to become more critically analytical of all of our flying decisions, both before and after the fact. We need to find a way to identify those bad decisions that didn't result in any bad result.
Let's take an example. You're thermaling at your local site on a somewhat windy day. The thermals weaken with altitude, and the wind grows stronger. You need to make sure you can always glide back to the front of the ridge after drifting back with a thermal. You make a decision ahead of time that you will always get back to the ridge above some minimum altitude above the ridge top, say 800 feet. You monitor your drift, and the glide angle back to the ridge, and leave the thermal when you think you need to in order to make your goal. If you come back in at 1,000' AGL, you made a good decision. If you come back in a 400, you made a bad decision. The bad decision didn't cost you, because you built in a good margin, but it's important that you recognize it as a bad decision. Without having gone through both the before and after analyses of the decision, (setting the 800-foot limit, observing the 400-foot result), you would never be aware of the existence of a bad decision, or the need to improve your decision-making process.