I think your two examples of abusing the feature can be more easily and subtly done today:
If you hate me and want to spread rumors you could just share with “friends except jkaufman”. To your other friends it just looks like a normal post with restricted visibility. You can do this today on FB, either directly or by adding me to your “restricted” list (which is automatically carved out from posts shared to “friends”). You can also just block me and expect reasonably that no one will notice.
If you want to make me look bad by assocation and you can convince me to accept a friend request from your fake accounts, all you have to do is post boring content I won’t interact with. The network will quickly decide that these new friends are not interesting to me, and then when they later start posting hateful things I won’t notice.
I think your two examples of abusing the feature can be more easily and subtly done today:
If you hate me and want to spread rumors you could just share with “friends except jkaufman”. To your other friends it just looks like a normal post with restricted visibility. You can do this today on FB, either directly or by adding me to your “restricted” list (which is automatically carved out from posts shared to “friends”). You can also just block me and expect reasonably that no one will notice.
If you want to make me look bad by assocation and you can convince me to accept a friend request from your fake accounts, all you have to do is post boring content I won’t interact with. The network will quickly decide that these new friends are not interesting to me, and then when they later start posting hateful things I won’t notice.