In the end, Geto was right. Sort of. (Jujutsu Kaisen)

Not about killing all normal people, no, but about strength. In the beginning, he viewed strength as a mantle of responsibility, that those born into power have an innate duty to those weaker than them. This was pretty much his entire reason for existing. Him, and Gojo, the strongest, protecting the world.

But then he saw what the weak can do. He saw an organization of normal humans conspire to kill just a (relatively) normal girl. Most importantly, he saw someone stronger than him living in complete oppositions to his ideals. Toji didn't protect, he simply lived according to his own whims (sound familiar?)

And after all this, combined with isolation and work, he came to a conclusion. His entire worldview was wrong. The strong, by virtue of strength, should cull the weak. Not because the weak are evil, but because the weak can come together in a group and combine their strength to control the strong.

And that's exactly what happened in the end. All of the characters came together in one large group effort to kill Sukuna. It's exactly as he said, the weak can come together and overpower the strong.

And I'm left wondering, would Geto have tried to stop Sukuna? Were his ideals truly how he felt, or was he just lashing out at a world that he felt discarded him?