People called Obito theorists dumb as well and look what we've got. Anything's possible.
Sorry but in this scenario you're more like the Izuna theorists, you expect Kishi to write his story the way YOU like. This is not reality, Kishi has his own common sense and knows what he's writing. Naruto cannot get Rinnegan, and he'd have no purpose having it. He has no use for either of the six paths, and it's not like he's about to use Chibaku Tensei and kill everyone.
I'll tell you how because you clearly missed it like the rest of the dopes on here............
Remember the combined chakra of the Bijuu's that Naruto received before the Mazou gobbled them up?
Yeah, that's how. The chakra that he got may be small in quantity but it will pretty much create a Mini-Juubi inside Naruto and that's how he will get the eyes, even if for a short amount of time.
Not to mention, the god damn Juubi itself saw that very same chakra and Rikudo's image in Naruto(WITH THE RINNEGAN I might add).
It will happen, and then you will be the one left feeling stupid, not to mention butthurt.
Peace
The person wielding all that chakra right now is Obito, not Naruto. So if anything, Obito is getting a second Rinnegan.
Well most of my predictions of everything have happened and my extensive theory I posted a month and a half ago predicted he would get it through the culmination of the Bijuu's chakra which as we know, are the original composition of the Juubi, giving an effect on Naruto's body and the Rinnegan will manifest.
We don't care about how many of your predicitons became true, most were probably easy shots at obvious stuff. You need to look at the manga from Kishi's point of view. Naruto with Rinnegan makes no sense plot wise, no sense in regards to Naruto's techniques, no sense to Naruto's purposes and no sense aesthetically.