Kiara Takanashi used to be the Emmanuel Goldstein of this board, the universal target of hate. But after character development (such as dropping Takamori), she spent a lot of effort trying to redeem herself to us. She studied Idol culture, heavily respected it, and actively wroked to be respected as an Idol. This was a person who will never collab with 3D males.
On the other hand, Callope Mori was a person who did not care about Hololive and its culture; only using it to promote her failing music career. She would rather fit herself with filthy 3D males like Connor.