I could go into a huge tirade about it but I won't. In short, I ship what I want, do not get into that subject with me.
It's not pointless filler. It gave development to a part of Cilan's character we hadn't seen at ALL, not even really in his first episodes: the bond he has with his brothers. You know, the people he is RELATED TO and runs a gym with, who it took 52 episodes for him to even mention again. Heaven forbid an episode not be all about legendaries flying around.