Taylor Swift showcased her formidable "Reputation" during her Eras Tour stop in Cardiff, Wales, on Tuesday, treating fans to performances of two of her pointed diss tracks: "I Forgot That You Existed" and "This Is Why We Can't Have Nice Things." Fans noticed the significance of this mashup, especially given its timing the day after Scooter Braun announced his retirement as a music manager, which also happened to be his birthday.