As I understand it, the bike industry tracked front wheel detachment failures -- on both nutted and QR axles -- for many years. I once found a transcript of a lawsuit, where I gathered that there were maybe a dozen or so incidents per year that the bike companies were aware of. This was a legal problem but also a straightforward engineering problem: Even if a failure mode is believed to be caused by user error, most engineers will try to design an error-prone user adjustment out of a product if it can be done with reasonable convenience.

Bike engineers started designing "secondary retention" for front wheels. An engineer at Schwinn patented one idea involving simple spring clips. Other companies tried without success to license the Schwinn patent, and eventually the industry settled on lawyer lips. Also, front wheel detachment failures virtually disappeared around the same time, so any hope of gathering good statistical data on the issue is lost.

Disclaimer: I'm neither a lawyer nor an engineer. Also, I prefer nutted axles or Brilando clips.