Just looked up ultralight. Your a brave man
Ultralights are like anything else out there, there are good one and there are the not so good ones. It just means you have to do your home work and research and look at past history and then buy one. Of course like anything that you sit in to fly, you MUST get proper instruction before heading up into the sky on your own.
Just like cars, drones, 4 wheelers and real flying machines (what ever they might be), you have people who crash, which we often hear about and then we have majority, who do not crash, from whom we rarely hear about. There are a number of ultralights made today that are extremely capable and safe flying machines, as long as the pilot has been properly trained.
If you wonder about being brave in flying machines, why not take a look at the new Boeing 737 MAX 8. That flying machine required only an iPad 58 minute video to be watched by the pilot, to transition from the older 737 to that MAX 8 because so much of it was just like the old one. Now that does not instill confidence in me, but I was not aware of that last year, when I allowed myself and family to step into one to fly to Europe and back. We may see a can of worms opening regarding this one.
But I digress, there are plenty of things we may have done in the past, that with hind sight, we now realize some were not safe at all, we were just lucky. And of course plenty of things we have done in the past that are still safe to do today. I have been flying the DJI drones, Mavic and now
Mavic 2 Pro for just over two years and I have thankfully not crashed one yet. Did trim some branches, well twigs really, in winter but that was my own fault for miss judging distance from the tree. Of those people who are careful and conscientious that are flying descent quality drones, I would think the majority have not crashed, and as long as they don't get over confident and complacent, they will probably continue to fly crash free, we just won't hear about it.