An amazing person mainly known as a Gwen and not a kelsey because kelsey suck and Gwen’s are amazing
Total bullshit.
Some etiquette courses for military officers have suggested using "That's amazing!" when one is tempted to say "Bullshit!"
Boss: "I am a millionaire. I have a mansion and a yacht."
Underling: "That's amazing, boss! I'd really like to hear more about both!"