Yeah I definitely agree. It was fucking awful. I remember that plot with Kashin Koji, but I didn't know about Sasuke going back in the past. WTF..
Yeah, it also gets retconned as he gets memory wiped or something? It sounded like a pure favservice arc/storyline. I only read highlights/recaps of Boruto tbh.
Naruto was meant to die apparently as the beginning implies at least too. Sasuke is theorised to die at some point and
Boruto fucking dies at least temporarily after Iwaki, Narutos adopted son kills him lol. Iwaki is the one who kills Naruto in the/an alternate future apparently. Boruto is a hot fucking mess.
The anime has a retelling of the movie, tons of filler and very slow pacing apparently for 100 episodes maybe so some traditions lasted well unfortunately.