Invalid Premise #1 is "full BTC refund means the EXACT NUMBER of BTC paid NO MATTER WHAT"
Ok, at exactly what BTC price was the full BTC refund clause valid? You can show that, can't you? Or is the price restriction just a figment of your sick imagination?
According to icebreakers totally sound logic, the deal was invalid the second it was made.
There has never been a day in bitcoin history where the price remained stable.