This seems likely to be a misrepresentation. Has anyone here actually said that the good gods must be 100% infallible in order to be considered good? Or have they (as I have) said that failing the prevent the Cataclysm when they could have done so is in itself so egregious that is prevents them from being called good for any reasonable definition of that term?
Here you're underplaying just how bad the Cataclysm was. It wasn't a little boo-boo that can be brushed off with an apology. It was a genocidal act. Being able to prevent a genocide, and failing to do so, disqualifies you from being "good."