Is the Dragon Ball Super anime mostly filler?
No, those arcs were also in the manga. Both the manga and the anime are based in Akira Toriyama main ideas and guidelines, though both the anime and manga have more room for the writers to put their own ideas because there isnt a manga fully made by Akira Toriyama like there was in Dragon Ball Z.

https://www.youtube.com/watch?v=PbWLOvBIWlA