If DNA was to do this as official policy they would be in violation of US emission laws.
They already have though. I've heard of several people who received the DP ECU on warranty. I don't think it's "official policy" because not everyone who gets the cooked engine finish problem fixed receives one. That's why I'm curious about what those who did had to say to get their bikes properly fixed. At least one guy also got new heads and cylinder assemblies along with the ECU, so Ducati definitely doesn't have just one way of dealing with this.