Ok, I hear you.But that's what I've been saying. I'm saying that 6 Paths have never been a Rinnegan tech only. It can also be used by the body: Yang. Obviously, Naruto can never get the Rinnegan so it wouldn't make sense.
What I'm saying is this:
Naruto gets: Asura, Naraka, Animal. (RSM) Sasuke gets: Deva, Petra, Human. (Rinnegan)
Because Hagoromo's power was split between the 2 of them.
So we don't know whether or not 6 Paths are strictly only for Rinnegan. Naruto accomplished "mimicking" those 2 Paths. (we know that the outer path is the only path remaining outside of the 6 paths, also to use the Outer Path, you need to use the Gedo Mazou).
We also know that the Sage of 6 Paths do not necessarily need the Rinnegan (as Hamura demonstrates with creating the moon and having a life there, although you could argue that it is the work of his Tenseigan, therefore still an doujutsu tech).
The fact that Hagoromo split his chakra means that he most likely split the 6 Paths among Naruto and Sasuke. I am completely disregarding the Rinnegan here, which is why I kept bringing up the difference of Sasuke's Rinnegan and Madara's Rinnegan.
Sasuke's Rinnegan is one eyed and also tomoed.
As well as the difference of Nagato's 6 Paths compared to Obito's 6 Paths (still using Madara's eyes).
My hypothesis is that Naruto not having the Rinnegan does not mean he has no access to the 6 Paths techs and he most likely uses the 3 while Sasuke uses the other 3 due to their special circumstance.
Remember Hagaromo powers is not just eyes, but body (life force). So it being split up is still perfectly covered if Naruto doesn't have any eye-based techniques.
However, the fact that Sasuke got a stats boost (body) is noteworthy