Why doesn't Naruto have/use his Six Paths power? Sasuke still has his Six Paths power, the Rinnegan. I understand that the other Tailed Beasts are no longer in him... but in the 4th War, even when Madara pulled out the Nine Tails, Obito gave him the One Tail and the Eight Tails chakra; thus, he was able to use his Six Paths power since he already had chakra of all the other tailed beasts.

Why doesn't Naruto have his Six Paths power?
Naruto did not lose his Six Paths senjutsu because he can still manipulate truth seeking balls, and his eyes also exhibit that he is using it in battle (tailed beast eyes crossed with sage eyes with no eye shadow).

Sasuke awakened the Rinnegan because Kabuto used Hashirama's cells to heal him after Madara impaled Sasuke with a sword. Thus, Asura's chakra mixed with Indra's chakra, becoming Hagoromo's chakra, thus allowing Sasuke to awaken the Rinnegan.

Basically, nothing has changed, except that Naruto and Sasuke can't use the Six Paths Sealing jutsu anymore because it can only be used once per lifetime and the two already used the jutsu to seal kaguya