Yin Yang Yo Easter Egg - Harry Potter Theory Reference

In an episode of "Yin Yang Yo!" Yin and Yang are invited to a magic school where they meet a student supposedly "the chosen one" resembling Harry Potter. Near the end of the episode, Yin and Yang find out that the "Harry Potter" kid (I don't remember his name) was working for a nemisis of theirs. Yang ingages in battle with "Harry Potter Kid" and during battle Yang stops and says, "Here's a spoiler! In the last book you croak!" which is a reference to the ongoing theory that in the last book of Harry Potter, Harry will find himself on a card in a chocolate frog/toad (I forget) candy, which are cards of the greatest wizards/witches. Geuss one of the writers is a Harry Potter fan.