Naruto received a power up with the Yang affinity, yet TSB require Yin/Yang release to utilize.Naruto being an Ashura transmigrant has the Yang affinity, hence RSM.*
Sasuke and Madara being Indra transmigrants have the Yin affinity, hence Rinnegan.*
Sasuke received the Rinnegan, yet needed Yin/Yang to activate in the first place (Databook abilities state such as-well. Their power ups are just proficient in that areas, but it does not mean they lacked in their respected Yin and Yang
I just confirmed that you cannot prove that a Senju cannot activate the Rinnegan through the same means which an Uchiha can. You must realize by now how baseless a claim is that it does not work both ways.Good, you just confirmed that a Senju activating Rinnegan was never shown in the manga and is just your own assumption.
Going by manga facts, only Uchihas awakened the Rinnegan, I explained the reason why in my previous posts, and above.^*