The ability use other techs is evidenced by his using chidori with it. Why would he be able use one but unable to use the others
....because chidori isn't a rinnegan technique....
...because just because you can use one technique through something =/= you can use ALL techniques through something
.... because preta path absorbs chakra, therefore putting the preta barrier around susanoo would result in susanoo being absorbed as well as whatever attack is being used on it.
It's even worse than me claiming that KCM Naruto can use bijuudama rasenshuriken since he can use bijuudama, and he can use rasenshuriken, or claiming that KCM NAruto can use a bijuudama on the level of BM Naruto because KCM NAruto has the same amount of chakra as BM NAruto.
In majority of the examples you gave the opportunity to use absorbsion wasn't there as they were either blitzed or blindsided.
really? Madara didn't see the rasenshuriken coming at him when he got hit by YRS? He didn't see sasuke coming at him with chidori eiso? Kaguya didn't see naruto's rasenshurikens being thrown at her? If preta path can't even absorb those attacks, then obviously it's not going to be a factor in this fight.
The middle part is nonsense. It doesn't take into account how the fight played out. After the bijuu chakra was absorbed he smacked the avatar clones around and then fired Indra's arrow to which naruto responded by throwing the two tbbfrs. There was never a need to use these "fictitious" abilities
um, why smack the avatars around when you can not only defeat them, but add their chakra to your own power? Why use indra's arrow when you can just blitz and absorb all of naruto's chakra?
If you want to take into account how the fight played out, Sasuke with intent to kill didn't use any of those fictitious abilities you're trying to arbitrate he has, and therefore as long as you can't prove by necessity that he has them, he doesn't get them.
Evaluate naruto by the same standards and I can come up with a ton of fictitious abilities that naruto could have used, but just decided not to.
Sasuke's preta shits on everything in nardo's arsenal
the same preta path that couldn't absorb attacks like YRS, chidori eiso and bijuu rasenshuriken despite being used by actually juubi jins and kaguya? The same preta path who's best feat is getting its barrier pushed back by SM FRS and absorbing amaterasu after the user gets smothered by it?
Yeah no, give sasuke the ability to absorb any ninjutsu regardless of its potency, properties, and regardless of his reaction time, and naruto gains the ability to use things like tajuu kagebunshin all of which are powered by kokuo's chakra boiling ability, or their attacks just get imbued with tons of natural energy making sasuke turn into stone, or naruto just blitzes sasuke's head off with the shunshin he used to rip kaguya's arm off.
Seriously for every ability that you give to Sasuke that simply can't be disproven with 100% certainty, I can give naruto 3 abilities that you can't disprove with 100% certainty.