No, he hasn't. He is clearly using Six Paths Senjutsu in Boruto.
For Yang Release, he has never used a technique confirmed to be Yang Release. If you are referring to restoring eye balls and saving Guy, that was Yin-Yang Release.
The only thing he may have lost is the ability to don the upgraded Chakra Mode for SPSM, where he draws the power from every single tailed beast and essentially goes into a pseudo-ten tails form, though this has not been confirmed nor ever stated. Though it could have literally just have been a design change and was indeed using the same mode, but again, never confirmed.
Just because he didn't use it, doesn't mean he doesn't have it.
The mark of Naruto using SPSM are his eyes, fox-toad mix without pigment.
The pseudo TT cloak was never part of SPSM to begin with.
For why Naruto doesn't use chakras of the other Tailed Beasts anymore, who knows, maybe they ran out.
I think it's clear by now that Naruto no longer has the other beasts. They offered him help against Madara, he accepted. Madara's dead, the war's over, the Biju went their own way. It would be really strange if they stuck around forever.
He still has six paths power and six paths senjutsu. The eyes are the signature for SPSM (lack of pigmentation with the plus pupil) and he still has that. He still can touch TSB's (The Last).
Not sure if Hagoromo accounted for Naruto throwing all that Tailed Beast chakra at Sasuke minutes later though and for Sasuke absorbing Naruto's chakra. So it's quite possible that because of their battle, the last bits were used to dispel Infinite Tsukuyomi.
Meaning Hagoromo's comment probably didn't take into account them fighting and spending so much chakra against each other.
OR Naruto still has a tiny little bit of each of the Tailed Beasts' chakras to be a meeting stone, but not enough to use in battle anymore.
In chapter 692, Hagoromo said that Naruto is like a meeting place for the tailed beasts. We haven't seen them use this opportunity but I doubt they would lose it just like that.
I'm not saying he's permanently lost it forever. I'm sure that if Naruto wanted to, he could go around collecting their chakra again.
Secondly, if you look at the context, it's clear Hagoromo says it so Kurama has an excuse to go back to Naruto. It's not a super-strict absolute rule that Hagoromo imposed. this was also before Naruto actually fought Sasuke to his limit.
You can't lose your own Six Paths Power that your body itself generates.
The confusion comes from the fact that a lot of things happened to Naruto all of a sudden, but some things are Naruto's alone and some things were given.
IE by becoming pseudo-juubi jinchuriki, Naruto awoke his own Six Paths chakra. SP chakra + Sage Mode allows one to obtain SPSM, but like Sasuke's rinnegan, it's probable that Hagoromo sped up some things. Hagoromo also granted both a seal with Six paths: chibaku tensei and half his regular chakra, which they both lost.
It doesn't help that both the chakra Hagoromo gave them, and the SP chakra they awaken, are both technically hagoromo's chakra, so they both lost and retained it.
You're not getting it man.. it is the same type of chakra, but it is not exactly the same. If it was the same then Madara with both Rinnegan would automatically have the same power as Hagoromo, he would also have had SPSM. But no, he had to resort to becoming a TTJ to get near Hagoromo's power. That's like saying since Danzo had Hashirama's chakra and DNA in him it made him the same strength as Hashirama. SPC and SPSC is possessed by Hamura and Toneri too. Does that mean they have Hagoromo's chakra?? No. It does not.
Hagoromo possesses the Juubi, hence Madara needed it to approach his power level.
Fact still is, for all intents and purposes, Six paths chakra IS hagoromo's chakra. Toneri, Hamura were never said to have Six Paths chakra, or power, or SPSM. The whole Six Paths term is exclusively used with Hagoromo, his powers, chakra and descendants.
Hagoromo did not possess the Juubi when he died in any shape way or form.
DB4 Six paths Chibaku Tensei entry, and the info from the novels and the info on Tenseigan and Toneri from the databook. They all state that SPC and SPSC are connected to Hamura and Toneri and the Tenseigan. Hence them having it. Seelentau brought it up and talked about it before. Six Paths Senjutu is SPC with Senjutsu chakra.
Before we go further with this umpteenth discussion about naruto losing his tailed beast power and SPSM , I have a question .. Did Sasuke lose his rinnegan power(powers got diluted)? Afterall he never used rinnegan techs after the last fight accept for that teleportation(which may or may not be Body Flicker)? Clearly naruto has SPSM cloak and it was confirmed In various arcs(like in Gaiden, Boruto the movie and so on) and sage of 6 paths clearly said regardless of what happens naruto would be TTJ (though pseudo because he doesn't possess complete chakra).Just because Sasuke has rinnegan people assume that he hasn't lost his power whereas just because naruto's cloak changed they believe that somehow naruto lost his power even though it's redesign of same power.. just like naruto hasn't used other tailed beasts powers sasuke never has used other rinnegan tech like pretha path and so on. So does that imply he also lost those power or the fact that he and naruto didn't had the occasion to use their full strength ?
Both Sasuke and Naruto received half of Hagoromo's (Six Paths) Chakra, which were meant for the Six Paths: Chibaku Tensei. The side effects are awakening their respective abilities, which they can now generate their own Six Paths Chakra and Six Paths Sage Chakra with. When they used the Six Paths: Chibaku Tensei, they used up Hagoromo's (Six Paths) Chakra they received. They still have/can generate their own Six Paths Chakra and Six Paths Sage Chakra.
u guys are both right and wrong at the same time. ttj gives u kaguya's chakra, and not hago's. its only logical. she is literally the juubi. but by getting the rinne u get hago's chakra. that's why madara was kinda op. he had both in one body. sasuke had both hago's own, and original sp chakra, as well as the one he got from getting his own rinne, and the hashi cells he got from kabuto. same thing with Naruto. 9 bijuu chakra= pseudo ttj= sp senjutsu= sp chakra+ senjutsu. so in a way Naruto has both kaguya's chakra, and hago's. but only fractions of each, now. they would've had their new powers anyways. would they be weaker, and take longer to awaken? yes, but they would still be the same.