Hinata byakugan is as pure as Hanabi if not greater now that Hamura chakra is currently manifested into her. From the way I see it, Toneri took the alternative approach because he wouldn't want to put himself into position where he has to pluck Hinata eyes since he was romantically in love with her and was watching over since he was a young child. So ofc Hanabi is the perfect opportunity to gain advantage.
Let's be real here. Any sane man wouldn't want an eyeless woman to be their bride.
Let's be real here. Any sane man wouldn't want an eyeless woman to be their bride.