I"m of the same thought at Bobby. I don't see how Ethanol is directly attributable to a cylinder to blowing. Engines are designed to run many more hours than what you got. To me, it didn't get the right amount of oil, or some mechanical tolerance was out of whack, or something clogged. I'd be afraid that if a root cause is not found, it will happen again. If you decide to do it, I'd spend some money to get an extended warranty, if it even exists.
In manufacturing, it's a distribution of variables. And tolerances are designed it so that a very small percentage are going to fail. To design for zero failures is prohibitively expensive. I'm thinking you unfortunately got the small percentage that statistically fail in the field.