As his sons were born ootsutsuki and they came to be known as senju as uchiha ancestors

Besides, I already stated before, if the sage got his chakra from birth what tells you that the characteristics he had, did not classify them as what we later learned to be uzumaki's characteristics? I already posted that at my theory but you didn't answer. He might have been the first uzumaki without actually have the name. The idea that so many people believe what they see immediately is just ludicrous. Have you any idea how many things in this manga first depicted in a certain way and then changed completely? Kurama being devil himself, Itachi a mass murderer, Orochimaru as a maniac who slowly gets more and more logical, Obito being dead, Madara being Tobi, Nagato being akatsuki's leader. What makes you think that everything is so definite?
It's funny really how many people use as dogma that chapter in which Obito states senju and uchiha relationship to the sage as an undeniable fact and yet no one talks about older's son dojutsu which has a spirral patter identical to uzumaki. If Kishimoto wanted to end this once and for, he would have given to the elder son a mere sharingan. Yet he gave him a dojutsu with the spiral pattern specifically. Why from all the symbols chose this one?