Actually the preorder model is bullshit because manufacturers promise something which they know it will never be possible. HF knew they will never be able to fully refund everyone in case something went wrong so they decided to go all in and promise a bunch of lies to get the maximum amount of money in one run so they can make them vanish. Just like BFL lied about a delivery date that was before the real chip tape out the same way HF was flashing the Uniquify shit (still in the OP) to later blame them on the fail.