At least for a while. Before his fusion with Kami Piccolo was a warrior and kept trying to get stronger. In Z he didn't care how strong Frieza was despite King kai's warning he still went to Namek. He should defuse with kami to get his Namek saga personality back instead of just standing next to Dende and Mr. Popo and giving long speeches. After some intense training and the fusing with Kami again should give him some major boost esepcially in DBS.