I can't disagree with the video in the OP. I liked Naruto well enough in the first part, but revealing that Naruto was hero of prophecy and ninja royalty all along fundamentally screwed up his character.
On top of that, they got too carried away with all of the Uchiha drama, OP bloodlines and ridiculous abilities. All of the strategy and skill from the earlier fights disappeared.
Rock Lee should have been the main character lowkey. The OP's video is spot-on about Lee being the character that best exemplifies the message they were trying to teach in the first part.
^ It's a shame that Naruto fell off so hard, because that Lee vs Gaara fight was and will ALWAYS BE some GOAT-tier, classic stuff. Lee is that dude.
But still... Fullmetal Alchemist, Jojo's, One Piece, Yu Yu Hakusho, DBZ >