You say that like it is an absolute truth. There are a lot of things we the viewers do not know about RWBY as a series. Episodes f RWBY are incredibly short when compared to other similar forms of media especially through out vols one and two. There may have been a lot of character developments or interactions that viewers like us never saw happen on screen. Like why Ruby decided to call Jaune and his team instead of someone else like the school staff or anyone else. Did they have some major development that we never witnessed? Think waiting a little longer would be the best action to take. Also it turns out that Jaune looks very similar to Yangs dad when he is revealed at the end of vol 3.