To be honest, maybe. A longass show such as Dragon Ball can never turn out good if one, maximum two characters monopolize it. OK, at the end of the day Goku is still the winner, but at least don't nerf the side characters. Not everyone is a fan of Goku, or even his sidekick Vegeta (who's been nerfed as well). There are other characters that some of us grew to love, and for good reason. Be it their personality, strength or development. Give us some excitement and joy as well, make them worth, have them catch up a bit with the MCs, play some important roles during arcs, have exciting power ups as well.
What they've done to Goku is unjust as well. Imagine rooting for him since the beginning of the show, for the little, adorable and justice-loving fellow he was, and then see how he turns out in Super. Such a big disappointment and flanderization of the iconic childhood hero.