J-man didnt teach naruto wind
Hell J-man didnt even TELL naruto or teach naruto even about elemental recomposition, AT ALL, kakashi had to explain everything from scratch
This new jutsu is CUTTING THROUGH MOUNTAINS AND TREES, therefore it is WIND based, therefore it is NOT "THAT JUTSU"
It is a improved RS.
Hence why it damages his arm on a cellular level and sage toad says "natural chakra heals you and allows you to not take much damage" and then naruto says "maybe now i can do it"
It's RS.
And, IF it is something J-man taught him, he pulled that outa his ass in a magical way considering he knew nothing about elemental recomposition from J man and he happens to be using a wind based technique from J man.
Doubtful, impossible in fact, unless theres a story hole, and there have been a few lately, like nothing can beat mangekyou sharingan genjutsu, and then 8tails suddenly can deflect it like standard genjutsu, that was a really shitty plothole.
EDIT:Naruto no longer likes kyubii or its powers, they gave us 10 episodes of shyte filler to explain this too.
Once he hurt sakura being in kyubii mode he hated himself, and no longer wants to go kyubii, so hes not going to "experiment" with the 9tails when last time he couldnt control it, narutos dumb but he at least cares for others safety and would definitely not **** around with something that serious