User blog comment:Eirasamix/Arranged marriages - for or against?/@comment-25156300-20191123235349/@comment-25156300-20191124151406

I don't think those cases are done for shock factor. They just really want their girl to be with Sasuke, and think having them be an Uchiha survivor would be the easiest way to get closer to him (seeing as he would be hard to get close to due to his personality). There is usually very little reason or depth behind characters like that, since everything in their story is done purely in an effort to end up with the target canon character.