Pahkitwin Syndrome

When a nice character is seen as a worse character than their mean counterpart as all their personality traits are ignored by the fandom, and is called a character with no personality, while the mean character is more flanderized, corny and is only called a character with personality traits because they happen to not be nice. The characters referred here are Sammy and Amy from Total Drama's sixth season

Miraculous Ladybug's fandom is now experiencing Pahkitwin Syndrome with Luka Couffaine.

He has some personality traits that don't just add up to him being nice, and even a bunch of character flaws. But since they aren't worked on, people don't acknowledge them. However, an antagonist as baseless and petty as Lila is seen as a better character despite actually having zero personality traits outside of hating Marinette