OP is clearly too ignorant to understand the themes in Naruto.
Let me explain this in a way you can understand.
Your beloved Itachi tried everything by himself and he failed- he even admited that much, Itachi realized they you need help in order to succeed. That's a real life message, good luck getting by solo- cause in the real world nobody gives a dam how you make it.
Allowing others to help you is a pro not a weakness moron. Clearly, you can't take your retard lens off to realize that.
Your case is clear bigotry, obviously having people want to help you is a good thing, deal with it, power is power, nobody gives a shit how you get it. Do you think military leaders conquered nations solo? No, they had armies.
Go complain about kaguya becoming a god by eating a fruit, Blackbeard stealing devil fruits, etc...
Even if you were right about your so called "borrowed power" your conclusion is completely erroneous.
Lets compare Sasuke without friendship powerups to Naruto under the same criteria.
Naruto looses kuruma.
Sasuke looses EMS since it is itachi's eyes.
So basically, without other people bestowing power, We have sage mode naruto vs MS Sasuke.
Furthmore, after kage summit, so after a few battles, Sasuke basically went blind.
Without outside help, we have sage mode naruto who is kage level vs blind Sasuke who is zetsu level.
GTFO--; SM naruto babyshakes blind Sasuke.