From what I understand, this Sybil fee issue is associated with avoiding gaming the platform to avoid zapping a stacker himself and having this influence the rating of the zapped stacker. Maybe I'm wrong, but if that's the case, wouldn't it be more appropriate to remove the rating or leaderboard for stackers?

On the other hand, after November 5th with the entry into force of the Cowboy Credits, does that solve this Sybil fee issue? Since they won't be SATs