Has there ever been a product launch that had failures this prominent in the review batch? Nothing comes to mind for me. Maybe the iPhone's antenna-gate, but that was more after it went for sale.
I forget if the red ring of death for Xbox360 affected reviewers or if they got special units to use. I know once it hit the public the failure rate was spectacular. I personally know someone who had to return 7-8 360's before he finally got one that worked. And in my gaming circle of friends it was pretty much the norm that anyone who had one had to return at least 1 unit if not a 2nd or 3rd to get a decent one.
In any case I know that the failure rate for a 360 started high and I believe hit at least 50%+ within a year of use.
For curisoity sake I would be interested what the Fold's public failure rate looked like in the same time period, as phones tend to be put to more physical abuse than gaming consoles. Just seeing the images of dents on the plastic after minimal use, these things would probably resemble a golf ball after a year.
Someone in this thread posted a link to how I think Nokia phones were tested. I want to see the Fold put in that vibrating drawer with those sharp cones for 6 hours. xD