Revenge and Redemption: The Final Chapter of Morgana

Why did Morgana say this in Persona 5 Royal

A Fata Morgana is a stunning optical illusion caused by the bending of light as it passes through layers of air with varying temperatures. This creates a complex form of mirage that distorts and magnifies distant objects, forming inverted and upright images that stack on top of each other. The name Fata Morgana comes from the Italian translation of Morgan le Fay, a sorceress from the legend of King Arthur who was believed to create false castles and lands in the air to lure sailors to their doom