I don't hate Chita. I am generally annoyed at how her entire plot arc is a great big bag of nothing and I don't think she's that funny as the series' designated comic relief weirdo, bu I don't viciously hate her as a character.
The thing that I am very specifically annoyed at is the constant use of "I don't understand what love is" as a stall tactic to character progress across so much of manga storytelling. It's hilarious how much Japan talks itself up as this rich, emotionally literate and nuanced society with their whole "the moon is beautiful because just saying you like someone is cringe" schtick, then lean so heavily into total emotional illiteracy as a plot device that nobody has an issue with. It just feels so lazy and is almost always only used as a way to get out of having characters actually confront their feelings because it would progress the story.