.... All aircraft are certified to fly on one engine all day long on as long you have fuel......
That will be news to those of us who flew/fly 727's and 747's.
Blanket statements and Blanket JUDGEMENTs don't do anyone any justice. If I have one engine in the bag and other issues on board, I'm happy to get it on the ground and walk away from it. Been there, done that, got the T-shirt. Until you're forced into the same predicament, just say "good job" to the pilot who pulled it off and offer support and encouragement for the upcoming inquisition.