I can tell you exactly why they broke and even point to the design flaw... and this is from not owning one.
I'll just use the photos that have been posted here and if I find some better ones else where... mind you, still drinking my first coffee of the day... so my thought pattern may be a tad erratic.
1st... Exhibit A - Dubyas pic
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You see the folded part... its not from the lower clamp, but having an extra thin wall where the screw threads into the top part of the post. I am sure there was worry for this part during the production process, even in whatever CAD software they were using, they would see just how little material there was on the wall of the clamp... someone in the design line either passed it up the chain and mentioned it and they (design lead) said its ok, or asked the fail rate and made a judgement call based upon sales... similar in decisions in the auto industry... catastrophic failures leading to death... failure rate vs profit margin vs loss of life retribution via court case, profit always wins.
2. Exhibit 1B Bubs pic but clearer
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Again you can see the deformation of the threaded section on the top post... this could be reduced in many cases, if the location of the threaded screw had a divot to center the post screw on the deck itself... would be an anti-drift divot... which would always keep the screw centered and eliminate the screw from wobbling and putting excessive distal force against the slim walls...
I have a feeling, but not 100% sure yet on their fix... or upgraded part as they like to call it.
The screw is smaller, the thread pitch is finer, which allows more material to remain when they drill/tap the threading... more material inherently means stronger.
3. Exhibit 1C
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random build pic from Haku... I circled the area... you can see just how thin the metal is around the screw head... I remember when I first saw these in design months ago... my first thought was how the screws seemed to walk within the posts... seeing them crooked and was curious why the negative post screw always sat deeper than the positive... don't have one physically to examine closely yet... but I think that removing the positive from the deck itself you can adjust the screw height equally in looks to the negative, then slap it back together.
Another pic of the thin wall of the post...
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I don't have a dog in this fight... and I feel bad for those even with the clone and it broke... money spent is still money spent...
Similar situation again for me is the last 2 purchases of RDAs for my Mechs...
Occula RDA... great idea's over all for the RDA... absolutely love the clamps... but the RDAs deck walls are so thin, any significant build transfers heat into the mod you use... and since I am rocking some hot builds, this is only exaggerates the heat exchange.
Ok coffee refill time...