My hot take here is that it's
Pikmin 2
Third party devs repeatedly struggled to get 100+ moving objects on screen at once on the Wii. Pikmin 2 did it on the GCN while looking gorgeous and, as I recall, having basically no slow down. It also had large levels, the ability to swap between two playable characters in different parts of the world with no loading or lag, and a day/night cycle with dynamic lighting.
"You're childish. What are you getting? Are you getting strawberry? Ha! That's such a childish flavor, only children eat strawberry."