I studied Anki for a while, and I was using the All-in-One Kanji Deck which is the most used Kanji deck in Anki.
If you delete all the Recall cards and just left the Recognition cards, there were nearly 4,000 cards.
Why is this? There’s only 2,136 Kanji from my understanding. Now that I’m attempting WaniKani, that question still lingers in my mind. I only made it ~300 cards in before I stopped.