Talk:Meta-Teaching/@comment-5693502-20180814003438/@comment-5693502-20180814022040

Yakone learning to Bloodbend without a full moon in the first place was considered an impossible feat. Him simply teaching Bloodbending to his sons isn't. In the same vein that Metalbending was once considered impossible, Bloodbending is simply a high-level Waterbending skill (that some users are more proficient in than others). And in the same manner that Korra learned how to Metalband from a Metalbender, an Avatar would logically be able to learn how to Bloodbend (if the skill weren't outlawed and considered a dark art).

So no, he doesn't count as a user.