Mm, this kind of infantilized, borderline mentally deficient caricature of the ditzy, pure maiden thing is a bit of a strange one. I don't know a single person of either gender who would find this type of person appealing IRL, since that'd be very weird. But I think it might exist in manga because author wants to write that ditzy, pure maiden comedy archetype, but then they're just not very good at writing it so it ends up like this instead? Idk