Um cara legal
He's not wrong.
Isn't it exactly because they hate them that they like to see them being killed?
I never understood the authors who do this, Genjutsu is a technique that needs to be learned to be used, not a passive of the sharingan, the sharingan only helps in learning and increases the technique. It's the same thing as saying that being in the world of Demon Slayer, any random sigh is a special and super powerful breath.
I thought they already knew about the history of their worlds? Shinobu, as an intelligent fighter, should know the usefulness of gathering information and yet she doesn't know anything about her anime-manga world...
They really know their math...